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1. Clinical coding of long COVID in primary care 2020–2023 in a cohort of 19 million adults: an OpenSAFELY analysis

Author

Walker, Alex, Green, Amelia, Mehrkar, Amir, Schaffer, Andrea, Brown, Andrew, Goldacre, Ben, Butler-Cole, Ben, MacKenna, Brian, Morton, Caroline, Walters, Caroline, Stables, Catherine, Cunningham, Christine, Wood, Christopher, Andrews, Colm, Evans, David, Hickman, George, Curtis, Helen, Drysdale, Henry, Dillingham, Iain, Morley, Jessica, Massey, Jon, Nab, Linda, Hopcroft, Lisa, Fisher, Louis, Bridges, Lucy, Wiedemann, Milan, DeVito, Nicholas, Macdonald, Orla, Inglesby, Peter, Smith, Rebecca, Croker, Richard, Park, Robin, Higgins, Rose, Bacon, Sebastian, Davy, Simon, Maude, Steven, O'Dwyer, Thomas, Ward, Tom, Speed, Victoria, Hulme, William, Hart, Liam, Stokes, Pete, Bhaskaran, Krishnan, Costello, Ruth, Cowling, Thomas, Douglas, Ian, Eggo, Rosalind, Evans, Stephen, Forbes, Harriet, Grieve, Richard, Grint, Daniel, Herrett, Emily, Langan, Sinead, Mahalingasivam, Viyaasan, Mansfield, Kathryn, Mathur, Rohini, McDonald, Helen, Parker, Edward, Rentsch, Christopher, Schultze, Anna, Smeeth, Liam, Tazare, John, Tomlinson, Laurie, Walker, Jemma, Williamson, Elizabeth, Wing, Kevin, Wong, Angel, Zheng, Bang, Bates, Christopher, Cockburn, Jonathan, Parry, John, Hester, Frank, Harper, Sam, O'Hanlon, Shaun, Eavis, Alex, Jarvis, Richard, Avramov, Dima, Griffiths, Paul, Fowles, Aaron, Parkes, Nasreen, Perera, Rafael, Harrison, David, Khunti, Kamlesh, Sterne, Jonathan, Quint, Jennifer, Henderson, Alasdair D., Butler-Cole, Ben FC., Tomlinson, Laurie A., Marks, Michael, Jit, Mark, Briggs, Andrew, Lin, Liang-Yu, Carlile, Oliver, Bates, Chris, Bacon, Sebastian CJ., Dennison, William A., Costello, Ruth E., Wei, Yinghui, Walker, Alex J., and Eggo, Rosalind M.

Published
2024
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2. Impact of long COVID on health-related quality-of-life: an OpenSAFELY population cohort study using patient-reported outcome measures (OpenPROMPT)

Author

Walker, Alex, Green, Amelia, Mehrkar, Amir, Schaffer, Andrea, Brown, Andrew, Goldacre, Ben, Butler-Cole, Ben, MacKenna, Brian, Morton, Caroline, Walters, Caroline, Stables, Catherine, Cunningham, Christine, Wood, Christopher, Andrews, Colm, Evans, David, Hickman, George, Curtis, Helen, Drysdale, Henry, Dillingham, Iain, Morley, Jessica, Massey, Jon, Nab, Linda, Hopcroft, Lisa, Fisher, Louis, Bridges, Lucy, Wiedemann, Milan, DeVito, Nicholas, Macdonald, Orla, Inglesby, Peter, Smith, Rebecca, Croker, Richard, Park, Robin, Higgins, Rose, Bacon, Sebastian, Davy, Simon, Maude, Steven, O'Dwyer, Thomas, Ward, Tom, Speed, Victoria, Hulme, William, Hart, Liam, Stokes, Pete, Bhaskaran, Krishnan, Costello, Ruth, Cowling, Thomas, Douglas, Ian, Eggo, Rosalind, Evans, Stephen, Forbes, Harriet, Grieve, Richard, Grint, Daniel, Herrett, Emily, Langan, Sinead, Mahalingasivam, Viyaasan, Mansfield, Kathryn, Mathur, Rohini, McDonald, Helen, Parker, Edward, Rentsch, Christopher, Schultze, Anna, Smeeth, Liam, Tazare, John, Tomlinson, Laurie, Walker, Jemma, Williamson, Elizabeth, Wing, Kevin, Wong, Angel, Zheng, Bang, Bates, Christopher, Cockburn, Jonathan, Parry, John, Hester, Frank, Harper, Sam, O'Hanlon, Shaun, Eavis, Alex, Jarvis, Richard, Avramov, Dima, Griffiths, Paul, Fowles, Aaron, Parkes, Nasreen, Perera, Rafael, Harrison, David, Khunti, Kamlesh, Sterne, Jonathan, Quint, Jennifer, Carlile, Oliver, Briggs, Andrew, Henderson, Alasdair D., Butler-Cole, Ben F.C., Tomlinson, Laurie A., Marks, Michael, Jit, Mark, Lin, Liang-Yu, Bates, Chris, Bacon, Sebastian C.J., Dennison, William A., Costello, Ruth E., Walker, Alex J., and Eggo, Rosalind M.

Published
2024
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3. Ethnic differences in the indirect effects of the COVID-19 pandemic on clinical monitoring and hospitalisations for non-COVID conditions in England: a population-based, observational cohort study using the OpenSAFELY platform

Author

Chaturvedi, Nishi, Park, Chloe, Carnemolla, Alisia, Williams, Dylan, Knueppel, Anika, Boyd, Andy, Turner, Emma L., Evans, Katharine M., Thomas, Richard, Berman, Samantha, McLachlan, Stela, Crane, Matthew, Whitehorn, Rebecca, Oakley, Jacqui, Foster, Diane, Woodward, Hannah, Campbell, Kirsteen C., Timpson, Nicholas, Kwong, Alex, Soares, Ana Goncalves, Griffith, Gareth, Toms, Renin, Jones, Louise, Annie, Herbert, Mitchell, Ruth, Palmer, Tom, Sterne, Jonathan, Walker, Venexia, Huntley, Lizzie, Fox, Laura, Denholm, Rachel, Knight, Rochelle, Northstone, Kate, Kanagaratnam, Arun, Horne, Elsie, Forbes, Harriet, North, Teri, Taylor, Kurt, Arab, Marwa A.L., Walker, Scott, Coronado, Jose I.C., Karthikeyan, Arun S., Ploubidis, George, Moltrecht, Bettina, Booth, Charlotte, Parsons, Sam, Wielgoszewska, Bozena, Bridger-Staatz, Charis, Steves, Claire, Thompson, Ellen, Garcia, Paz, Cheetham, Nathan, Bowyer, Ruth, Freydin, Maxim, Roberts, Amy, Goldacre, Ben, Walker, Alex, Morley, Jess, Hulme, William, Nab, Linda, Fisher, Louis, MacKenna, Brian, Andrews, Colm, Curtis, Helen, Hopcroft, Lisa, Green, Amelia, Patalay, Praveetha, Maddock, Jane, Patel, Kishan, Stafford, Jean, Jacques, Wels, Tilling, Kate, Macleod, John, McElroy, Eoin, Shah, Anoop, Silverwood, Richard, Denaxas, Spiros, Flaig, Robin, McCartney, Daniel, Campbell, Archie, Tomlinson, Laurie, Tazare, John, Zheng, Bang, Smeeth, Liam, Herrett, Emily, Cowling, Thomas, Mansfield, Kate, Costello, Ruth E., Wang, Kevin, Mansfield, Kathryn, Mahalingasivam, Viyaasan, Douglas, Ian, Langan, Sinead, Brophy, Sinead, Parker, Michael, Kennedy, Jonathan, McEachan, Rosie, Wright, John, Willan, Kathryn, Badrick, Ellena, Santorelli, Gillian, Yang, Tiffany, Hou, Bo, Steptoe, Andrew, Giorgio, Di Gessa, Zhu, Jingmin, Zaninotto, Paola, Wood, Angela, Cezard, Genevieve, Ip, Samantha, Bolton, Tom, Sampri, Alexia, Rafeti, Elena, Almaghrabi, Fatima, Sheikh, Aziz, Shah, Syed A., Katikireddi, Vittal, Shaw, Richard, Hamilton, Olivia, Green, Michael, Kromydas, Theocharis, Kopasker, Daniel, Greaves, Felix, Willans, Robert, Glen, Fiona, Sharp, Steve, Hughes, Alun, Wong, Andrew, Howes, Lee Hamill, Rapala, Alicja, Nigrelli, Lidia, McArdle, Fintan, Beckford, Chelsea, Raman, Betty, Dobson, Richard, Folarin, Amos, Stewart, Callum, Ranjan, Yatharth, Carpentieri, Jd, Sheard, Laura, Fang, Chao, Baz, Sarah, Gibson, Andy, Kellas, John, Neubauer, Stefan, Piechnik, Stefan, Lukaschuk, Elena, Saunders, Laura C., Wild, James M., Smith, Stephen, Jezzard, Peter, Tunnicliffe, Elizabeth, Sanders, Zeena-Britt, Finnigan, Lucy, Ferreira, Vanessa, Green, Mark, Rhead, Rebecca, Kibble, Milla, Wei, Yinghui, Lemanska, Agnieszka, Perez-Reche, Francisco, Piehlmaier, Dominik, Teece, Lucy, Parker, Edward, Walker, Alex J., Inglesby, Peter, Curtis, Helen J., Morton, Caroline E., Morley, Jessica, Mehrkar, Amir, Bacon, Sebastian C.J., Hickman, George, Croker, Richard, Evans, David, Ward, Tom, DeVito, Nicholas J., Green, Amelia C.A., Massey, Jon, Smith, Rebecca M., Hulme, William J., Davy, Simon, Andrews, Colm D., Hopcroft, Lisa E.M., Drysdale, Henry, Dillingham, Iain, Park, Robin Y., Higgins, Rose, Cunningham, Christine, Wiedemann, Milan, Maude, Steven, Macdonald, Orla, Butler-Cole, Ben F.C., O'Dwyer, Thomas, Stables, Catherine L., Wood, Christopher, Brown, Andrew D., Speed, Victoria, Bridges, Lucy, Schaffer, Andrea L., Walters, Caroline E., Rentsch, Christopher T., Bhaskaran, Krishnan, Schultze, Anna, Williamson, Elizabeth J., McDonald, Helen I., Tomlinson, Laurie A., Mathur, Rohini, Eggo, Rosalind M., Wing, Kevin, Wong, Angel Y.S., Grieve, Richard, Grint, Daniel J., Mansfield, Kathryn E., Douglas, Ian J., Evans, Stephen J.W., Walker, Jemma L., Cowling, Thomas E., Herrett, Emily L., Parker, Edward P.K., Bates, Christopher, Cockburn, Jonathan, Parry, John, Hester, Frank, Harper, Sam, O'Hanlon, Shaun, Eavis, Alex, Jarvis, Richard, Avramov, Dima, Griffiths, Paul, Fowles, Aaron, Parkes, Nasreen, Nicholson, Brian, Perera, Rafael, Harrison, David, Khunti, Kamlesh, Sterne, Jonathan AC., Quint, Jennifer, Henderson, Alasdair D., Carreira, Helena, Bidulka, Patrick, Warren-Gash, Charlotte, Hayes, Joseph F., Quint, Jennifer K., Katikireddi, Srinivasa Vittal, and Langan, Sinéad M.

Published
2023
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4. Eleven key measures for monitoring general practice clinical activity during COVID-19: A retrospective cohort study using 48 million adults’ primary care records in England through OpenSAFELY

Author

Fisher, Louis, primary, Curtis, Helen J, additional, Croker, Richard, additional, Wiedemann, Milan, additional, Speed, Victoria, additional, Wood, Christopher, additional, Brown, Andrew, additional, Hopcroft, Lisa EM, additional, Higgins, Rose, additional, Massey, Jon, additional, Inglesby, Peter, additional, Morton, Caroline E, additional, Walker, Alex J, additional, Morley, Jessica, additional, Mehrkar, Amir, additional, Bacon, Seb, additional, Hickman, George, additional, Macdonald, Orla, additional, Lewis, Tom, additional, Wood, Marion, additional, Myers, Martin, additional, Samuel, Miriam, additional, Conibere, Robin, additional, Baqir, Wasim, additional, Sood, Harpreet, additional, Drury, Charles, additional, Collison, Kiren, additional, Bates, Chris, additional, Evans, David, additional, Dillingham, Iain, additional, Ward, Tom, additional, Davy, Simon, additional, Smith, Rebecca M, additional, Hulme, William, additional, Green, Amelia, additional, Parry, John, additional, Hester, Frank, additional, Harper, Sam, additional, Cockburn, Jonathan, additional, O'Hanlon, Shaun, additional, Eavis, Alex, additional, Jarvis, Richard, additional, Avramov, Dima, additional, Griffiths, Paul, additional, Fowles, Aaron, additional, Parkes, Nasreen, additional, MacKenna, Brian, additional, and Goldacre, Ben, additional

Published
2023
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5. Ethnic differences in the indirect effects of the COVID-19 pandemic on clinical monitoring and hospitalisations for non-COVID conditions in England: a population-based, observational cohort study using the OpenSAFELY platform

Author

Costello, Ruth E., primary, Tazare, John, additional, Piehlmaier, Dominik, additional, Herrett, Emily, additional, Parker, Edward P.K., additional, Zheng, Bang, additional, Mansfield, Kathryn E., additional, Henderson, Alasdair D., additional, Carreira, Helena, additional, Bidulka, Patrick, additional, Wong, Angel Y.S., additional, Warren-Gash, Charlotte, additional, Hayes, Joseph F., additional, Quint, Jennifer K., additional, MacKenna, Brian, additional, Mehrkar, Amir, additional, Eggo, Rosalind M., additional, Katikireddi, Srinivasa Vittal, additional, Tomlinson, Laurie, additional, Langan, Sinéad M., additional, Mathur, Rohini, additional, Chaturvedi, Nishi, additional, Park, Chloe, additional, Carnemolla, Alisia, additional, Williams, Dylan, additional, Knueppel, Anika, additional, Boyd, Andy, additional, Turner, Emma L., additional, Evans, Katharine M., additional, Thomas, Richard, additional, Berman, Samantha, additional, McLachlan, Stela, additional, Crane, Matthew, additional, Whitehorn, Rebecca, additional, Oakley, Jacqui, additional, Foster, Diane, additional, Woodward, Hannah, additional, Campbell, Kirsteen C., additional, Timpson, Nicholas, additional, Kwong, Alex, additional, Soares, Ana Goncalves, additional, Griffith, Gareth, additional, Toms, Renin, additional, Jones, Louise, additional, Annie, Herbert, additional, Mitchell, Ruth, additional, Palmer, Tom, additional, Sterne, Jonathan, additional, Walker, Venexia, additional, Huntley, Lizzie, additional, Fox, Laura, additional, Denholm, Rachel, additional, Knight, Rochelle, additional, Northstone, Kate, additional, Kanagaratnam, Arun, additional, Horne, Elsie, additional, Forbes, Harriet, additional, North, Teri, additional, Taylor, Kurt, additional, Arab, Marwa A.L., additional, Walker, Scott, additional, Coronado, Jose I.C., additional, Karthikeyan, Arun S., additional, Ploubidis, George, additional, Moltrecht, Bettina, additional, Booth, Charlotte, additional, Parsons, Sam, additional, Wielgoszewska, Bozena, additional, Bridger-Staatz, Charis, additional, Steves, Claire, additional, Thompson, Ellen, additional, Garcia, Paz, additional, Cheetham, Nathan, additional, Bowyer, Ruth, additional, Freydin, Maxim, additional, Roberts, Amy, additional, Goldacre, Ben, additional, Walker, Alex, additional, Morley, Jess, additional, Hulme, William, additional, Nab, Linda, additional, Fisher, Louis, additional, Andrews, Colm, additional, Curtis, Helen, additional, Hopcroft, Lisa, additional, Green, Amelia, additional, Patalay, Praveetha, additional, Maddock, Jane, additional, Patel, Kishan, additional, Stafford, Jean, additional, Jacques, Wels, additional, Tilling, Kate, additional, Macleod, John, additional, McElroy, Eoin, additional, Shah, Anoop, additional, Silverwood, Richard, additional, Denaxas, Spiros, additional, Flaig, Robin, additional, McCartney, Daniel, additional, Campbell, Archie, additional, Smeeth, Liam, additional, Cowling, Thomas, additional, Mansfield, Kate, additional, Costello, Ruth E., additional, Wang, Kevin, additional, Mansfield, Kathryn, additional, Mahalingasivam, Viyaasan, additional, Douglas, Ian, additional, Langan, Sinead, additional, Brophy, Sinead, additional, Parker, Michael, additional, Kennedy, Jonathan, additional, McEachan, Rosie, additional, Wright, John, additional, Willan, Kathryn, additional, Badrick, Ellena, additional, Santorelli, Gillian, additional, Yang, Tiffany, additional, Hou, Bo, additional, Steptoe, Andrew, additional, Giorgio, Di Gessa, additional, Zhu, Jingmin, additional, Zaninotto, Paola, additional, Wood, Angela, additional, Cezard, Genevieve, additional, Ip, Samantha, additional, Bolton, Tom, additional, Sampri, Alexia, additional, Rafeti, Elena, additional, Almaghrabi, Fatima, additional, Sheikh, Aziz, additional, Shah, Syed A., additional, Katikireddi, Vittal, additional, Shaw, Richard, additional, Hamilton, Olivia, additional, Green, Michael, additional, Kromydas, Theocharis, additional, Kopasker, Daniel, additional, Greaves, Felix, additional, Willans, Robert, additional, Glen, Fiona, additional, Sharp, Steve, additional, Hughes, Alun, additional, Wong, Andrew, additional, Howes, Lee Hamill, additional, Rapala, Alicja, additional, Nigrelli, Lidia, additional, McArdle, Fintan, additional, Beckford, Chelsea, additional, Raman, Betty, additional, Dobson, Richard, additional, Folarin, Amos, additional, Stewart, Callum, additional, Ranjan, Yatharth, additional, Carpentieri, Jd, additional, Sheard, Laura, additional, Fang, Chao, additional, Baz, Sarah, additional, Gibson, Andy, additional, Kellas, John, additional, Neubauer, Stefan, additional, Piechnik, Stefan, additional, Lukaschuk, Elena, additional, Saunders, Laura C., additional, Wild, James M., additional, Smith, Stephen, additional, Jezzard, Peter, additional, Tunnicliffe, Elizabeth, additional, Sanders, Zeena-Britt, additional, Finnigan, Lucy, additional, Ferreira, Vanessa, additional, Green, Mark, additional, Rhead, Rebecca, additional, Kibble, Milla, additional, Wei, Yinghui, additional, Lemanska, Agnieszka, additional, Perez-Reche, Francisco, additional, Teece, Lucy, additional, Parker, Edward, additional, Walker, Alex J., additional, Inglesby, Peter, additional, Curtis, Helen J., additional, Morton, Caroline E., additional, Morley, Jessica, additional, Bacon, Sebastian C.J., additional, Hickman, George, additional, Croker, Richard, additional, Evans, David, additional, Ward, Tom, additional, DeVito, Nicholas J., additional, Green, Amelia C.A., additional, Massey, Jon, additional, Smith, Rebecca M., additional, Hulme, William J., additional, Davy, Simon, additional, Andrews, Colm D., additional, Hopcroft, Lisa E.M., additional, Drysdale, Henry, additional, Dillingham, Iain, additional, Park, Robin Y., additional, Higgins, Rose, additional, Cunningham, Christine, additional, Wiedemann, Milan, additional, Maude, Steven, additional, Macdonald, Orla, additional, Butler-Cole, Ben F.C., additional, O'Dwyer, Thomas, additional, Stables, Catherine L., additional, Wood, Christopher, additional, Brown, Andrew D., additional, Speed, Victoria, additional, Bridges, Lucy, additional, Schaffer, Andrea L., additional, Walters, Caroline E., additional, Rentsch, Christopher T., additional, Bhaskaran, Krishnan, additional, Schultze, Anna, additional, Williamson, Elizabeth J., additional, McDonald, Helen I., additional, Tomlinson, Laurie A., additional, Wing, Kevin, additional, Grieve, Richard, additional, Grint, Daniel J., additional, Douglas, Ian J., additional, Evans, Stephen J.W., additional, Walker, Jemma L., additional, Cowling, Thomas E., additional, Herrett, Emily L., additional, Bates, Christopher, additional, Cockburn, Jonathan, additional, Parry, John, additional, Hester, Frank, additional, Harper, Sam, additional, O'Hanlon, Shaun, additional, Eavis, Alex, additional, Jarvis, Richard, additional, Avramov, Dima, additional, Griffiths, Paul, additional, Fowles, Aaron, additional, Parkes, Nasreen, additional, Nicholson, Brian, additional, Perera, Rafael, additional, Harrison, David, additional, Khunti, Kamlesh, additional, Sterne, Jonathan AC., additional, and Quint, Jennifer, additional

Published
2023
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6. Clinical coding of long COVID in English primary care: a federated analysis of 58 million patient records in situ using OpenSAFELY

Author

Walker, Alex, primary, MacKenna, Brian, additional, Inglesby, Peter, additional, Rentsch, Christopher, additional, Curtis, Helen, additional, Morton, Caroline, additional, Morley, Jessica, additional, Mehrkar, Amir, additional, Bacon, Seb, additional, Hickman, George, additional, Bates, Chris, additional, Croker, Richard, additional, Evans, David, additional, Ward, Tom, additional, Cockburn, Jonathan, additional, Davy, Simon, additional, Bhaskaran, Krishnan, additional, Schultze, Anna, additional, Williamson, Elizabeth, additional, Hulme, William, additional, McDonald, Helen, additional, Tomlinson, Laurie, additional, Mathur, Rohini, additional, Eggo, Rosalind, additional, Wing, Kevin, additional, Wong, Angel, additional, Forbes, Harriet, additional, Tazare, John, additional, Parry, John, additional, Hester, Frank, additional, Harper, Sam, additional, OHanlon, Shaun, additional, Eavis, Alex, additional, Jarvis, Richard, additional, Avramov, Dima, additional, Griffiths, Paul, additional, Fowles, Aaron, additional, Parkes, Nasreen, additional, Douglas, Ian, additional, Evans, Stephen, additional, Smeeth, Liam, additional, and Goldacre, Ben, additional

Published
2021
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7. Changes in medication safety indicators in England throughout the covid-19 pandemic using OpenSAFELY: population based, retrospective cohort study of 57 million patients using federated analytics

Author

Fisher, Louis, primary, Hopcroft, Lisa EM, additional, Rodgers, Sarah, additional, Barrett, James, additional, Oliver, Kerry, additional, Avery, Anthony J, additional, Evans, Dai, additional, Curtis, Helen, additional, Croker, Richard, additional, Macdonald, Orla, additional, Morley, Jessica, additional, Mehrkar, Amir, additional, Bacon, Sebastian, additional, Davy, Simon, additional, Dillingham, Iain, additional, Evans, David, additional, Hickman, George, additional, Inglesby, Peter, additional, Morton, Caroline E, additional, Smith, Becky, additional, Ward, Tom, additional, Hulme, William, additional, Green, Amelia, additional, Massey, Jon, additional, Walker, Alex J, additional, Bates, Christopher, additional, Cockburn, Jonathan, additional, Parry, John, additional, Hester, Frank, additional, Harper, Sam, additional, O’Hanlon, Shaun, additional, Eavis, Alex, additional, Jarvis, Richard, additional, Avramov, Dima, additional, Griffiths, Paul, additional, Fowles, Aaron, additional, Parkes, Nasreen, additional, Goldacre, Ben, additional, and MacKenna, Brian, additional

Published
2023
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8. Eleven key measures for monitoring general practice clinical activity during COVID-19 using federated analytics on 48 million adults’ primary care records through OpenSAFELY

Author

Fisher, Louis, primary, Curtis, Helen J., additional, Croker, Richard, additional, Wiedemann, Milan, additional, Speed, Victoria, additional, Wood, Christopher, additional, Brown, Andrew, additional, Hopcroft, Lisa EM, additional, Higgins, Rose, additional, Massey, Jon, additional, Inglesby, Peter, additional, Morton, Caroline E., additional, Walker, Alex J., additional, Morley, Jessica, additional, Mehrkar, Amir, additional, Bacon, Seb, additional, Hickman, George, additional, Macdonald, Orla, additional, Lewis, Tom, additional, Wood, Marion, additional, Myers, Martin, additional, Samuel, Miriam, additional, Conibere, Robin, additional, Baqir, Wasim, additional, Sood, Harpreet, additional, Drury, Charles, additional, Collison, Kiren, additional, Bates, Chris, additional, Evans, David, additional, Dillingham, Iain, additional, Ward, Tom, additional, Davy, Simon, additional, Smith, Rebecca M., additional, Hulme, William, additional, Green, Amelia, additional, Parry, John, additional, Hester, Frank, additional, Harper, Sam, additional, Cockburn, Jonathan, additional, O’Hanlon, Shaun, additional, Eavis, Alex, additional, Jarvis, Richard, additional, Avramov, Dima, additional, Griffiths, Paul, additional, Fowles, Aaron, additional, Parkes, Nasreen, additional, MacKenna, Brian, additional, and Goldacre, Ben, additional

Published
2022
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9. Recording of ’COVID-19 vaccine declined‘: a cohort study on 57.9 million National Health Service patients’ records in situ using OpenSAFELY, England, 8 December 2020 to 25 May 2021

Author

Curtis, Helen J, primary, Inglesby, Peter, additional, MacKenna, Brian, additional, Croker, Richard, additional, Hulme, William J, additional, Rentsch, Christopher T, additional, Bhaskaran, Krishnan, additional, Mathur, Rohini, additional, Morton, Caroline E, additional, Bacon, Sebastian CJ, additional, Smith, Rebecca M, additional, Evans, David, additional, Mehrkar, Amir, additional, Tomlinson, Laurie, additional, Walker, Alex J, additional, Bates, Christopher, additional, Hickman, George, additional, Ward, Tom, additional, Morley, Jessica, additional, Cockburn, Jonathan, additional, Davy, Simon, additional, Williamson, Elizabeth J, additional, Eggo, Rosalind M, additional, Parry, John, additional, Hester, Frank, additional, Harper, Sam, additional, O’Hanlon, Shaun, additional, Eavis, Alex, additional, Jarvis, Richard, additional, Avramov, Dima, additional, Griffiths, Paul, additional, Fowles, Aaron, additional, Parkes, Nasreen, additional, Evans, Stephen JW, additional, Douglas, Ian J, additional, Smeeth, Liam, additional, and Goldacre, Ben, additional

Published
2022
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10. Potentially inappropriate prescribing of DOACs to people with mechanical heart valves: A federated analysis of 57.9 million patients' primary care records in situ using OpenSAFELY

Author

Fisher, Louis, Speed, Victoria, Curtis, Helen J., Rentsch, Christopher T., Wong, Angel Y.S., Schultze, Anna, Massey, Jon, Inglesby, Peter, Morton, Caroline E., Wood, Marion, Walker, Alex J., Morley, Jessica, Mehrkar, Amir, Bacon, Seb, Hickman, George, Bates, Chris, Croker, Richard, Evans, David, Ward, Tom, Cockburn, Jonathan, Davy, Simon, Bhaskaran, Krishnan, Smith, Becky, Williamson, Elizabeth, Hulme, William, Green, Amelia, Eggo, Rosalind M., Forbes, Harriet, Tazare, John, Parry, John, Hester, Frank, Harper, Sam, Meadows, Jonathan, O'Hanlon, Shaun, Eavis, Alex, Jarvis, Richard, Avramov, Dima, Griffiths, Paul, Fowles, Aaron, Parkes, Nasreen, Douglas, Ian J., Evans, Stephen J.W., Smeeth, Liam, MacKenna, Brian, Tomlinson, Laurie, and Goldacre, Ben

Published
2022
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11. Changes in English medication safety indicators throughout the COVID-19 pandemic: a federated analysis of 57 million patients’ primary care records in situ using OpenSAFELY

Author

Fisher, Louis, primary, Hopcroft, Lisa E. M., additional, Rodgers, Sarah, additional, Barrett, James, additional, Oliver, Kerry, additional, Avery, Anthony J., additional, Evans, Dai, additional, Curtis, Helen, additional, Croker, Richard, additional, Macdonald, Orla, additional, Morley, Jessica, additional, Mehrkar, Amir, additional, Bacon, Seb, additional, Davy, Simon, additional, Dillingham, Iain, additional, Evans, David, additional, Hickman, George, additional, Inglesby, Peter, additional, Morton, Caroline E., additional, Smith, Becky, additional, Ward, Tom, additional, Hulme, William, additional, Green, Amelia, additional, Massey, Jon, additional, Walker, Alex J., additional, Bates, Chris, additional, Cockburn, Jonathan, additional, Parry, John, additional, Hester, Frank, additional, Harper, Sam, additional, O’Hanlon, Shaun, additional, Eavis, Alex, additional, Jarvis, Richard, additional, Avramov, Dima, additional, Griffiths, Paul, additional, Fowles, Aaron, additional, Parkes, Nasreen, additional, Goldacre, Ben, additional, and MacKenna, Brian, additional

Published
2022
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12. Trends and clinical characteristics of COVID-19 vaccine recipients: a federated analysis of 57.9 million patients’ primary care records in situ using OpenSAFELY

Author

Curtis, Helen J, Inglesby, Peter, Morton, Caroline E, MacKenna, Brian, Green, Amelia, Hulme, William, Walker, Alex J, Morley, Jessica, Mehrkar, Amir, Bacon, Seb, Hickman, George, Bates, Chris, Croker, Richard, Evans, David, Ward, Tom, Cockburn, Jonathan, Davy, Simon, Bhaskaran, Krishnan, Schultze, Anna, Rentsch, Christopher T, Williamson, Elizabeth J, Rowan, Anna, Fisher, Louis, McDonald, Helen I, Tomlinson, Laurie, Mathur, Rohini, Drysdale, Henry, Eggo, Rosalind M, Wing, Kevin, Wong, Angel Ys, Forbes, Harriet, Parry, John, Hester, Frank, Harper, Sam, O'Hanlon, Shaun, Eavis, Alex, Jarvis, Richard, Avramov, Dima, Griffiths, Paul, Fowles, Aaron, Parkes, Nasreen, Douglas, Ian J, Evans, Stephen Jw, Smeeth, Liam, Goldacre, Ben, and (The OpenSAFELY Collaborative)

Subjects
parasitic diseases
Abstract

BACKGROUND: On 8 December 2020 NHS England administered the first COVID-19 vaccination. AIM: To describe trends and variation in vaccine coverage in different clinical and demographic groups in the first 100 days of the vaccine rollout. DESIGN AND SETTING: With the approval of NHS England, a cohort study was conducted of 57.9 million patient records in general practice in England, in situ and within the infrastructure of the electronic health record software vendors EMIS and TPP using OpenSAFELY. METHOD: Vaccine coverage across various subgroups of Joint Committee on Vaccination and Immunisation (JCVI) priority cohorts is described. RESULTS: A total of 20 852 692 patients (36.0%) received a vaccine between 8 December 2020 and 17 March 2021. Of patients aged ≥80 years not in a care home (JCVI group 2) 94.7% received a vaccine, but with substantial variation by ethnicity (White 96.2%, Black 68.3%) and deprivation (least deprived 96.6%, most deprived 90.7%). Patients with pre-existing medical conditions were more likely to be vaccinated with two exceptions: severe mental illness (89.5%) and learning disability (91.4%). There were 275 205 vaccine recipients who were identified as care home residents (JCVI group 1; 91.2% coverage). By 17 March, 1 257 914 (6.0%) recipients had a second dose. CONCLUSION: The NHS rapidly delivered mass vaccination. In this study a data-monitoring framework was deployed using publicly auditable methods and a secure in situ processing model, using linked but pseudonymised patient-level NHS data for 57.9 million patients. Targeted activity may be needed to address lower vaccination coverage observed among certain key groups.

Published
2021

13. Clinical coding of long COVID in English primary care: a federated analysis of 58 million patient records in situ using OpenSAFELY

Author

Walker, Alex J, MacKenna, Brian, Inglesby, Peter, Tomlinson, Laurie, Rentsch, Christopher T, Curtis, Helen J, Morton, Caroline E, Morley, Jessica, Mehrkar, Amir, Bacon, Seb, Hickman, George, Bates, Chris, Croker, Richard, Evans, David, Ward, Tom, Cockburn, Jonathan, Davy, Simon, Bhaskaran, Krishnan, Schultze, Anna, Williamson, Elizabeth J, Hulme, William J, McDonald, Helen I, Mathur, Rohini, Eggo, Rosalind M, Wing, Kevin, Wong, Angel Ys, Forbes, Harriet, Tazare, John, Parry, John, Hester, Frank, Harper, Sam, O'Hanlon, Shaun, Eavis, Alex, Jarvis, Richard, Avramov, Dima, Griffiths, Paul, Fowles, Aaron, Parkes, Nasreen, Douglas, Ian J, Evans, Stephen Jw, and (The OpenSAFELY Collaborative)

Abstract

BACKGROUND: Long COVID describes new or persistent symptoms at least 4 weeks after onset of acute COVID-19. Clinical codes to describe this phenomenon were recently created. AIM: To describe the use of long-COVID codes, and variation of use by general practice, demographic variables, and over time. DESIGN AND SETTING: Population-based cohort study in English primary care. METHOD: Working on behalf of NHS England, OpenSAFELY data were used encompassing 96% of the English population between 1 February 2020 and 25 May 2021. The proportion of people with a recorded code for long COVID was measured overall and by demographic factors, electronic health record software system (EMIS or TPP), and week. RESULTS: Long COVID was recorded for 23 273 people. Coding was unevenly distributed among practices, with 26.7% of practices having never used the codes. Regional variation ranged between 20.3 per 100 000 people for East of England (95% confidence interval [CI] = 19.3 to 21.4) and 55.6 per 100 000 people in London (95% CI = 54.1 to 57.1). Coding was higher among females (52.1, 95% CI = 51.3 to 52.9) than males (28.1, 95% CI = 27.5 to 28.7), and higher among practices using EMIS (53.7, 95% CI = 52.9 to 54.4) than those using TPP (20.9, 95% CI = 20.3 to 21.4). CONCLUSION: Current recording of long COVID in primary care is very low, and variable between practices. This may reflect patients not presenting; clinicians and patients holding different diagnostic thresholds; or challenges with the design and communication of diagnostic codes. Increased awareness of diagnostic codes is recommended to facilitate research and planning of services, and also surveys with qualitative work to better evaluate clinicians' understanding of the diagnosis.

Published
2021

14. Recording of “COVID-19 vaccine declined” among vaccination priority groups: a cohort study on 57.9 million NHS patients’ primary care records in situ using OpenSAFELY

Author

Curtis, Helen J, primary, Inglesby, Peter, additional, MacKenna, Brian, additional, Croker, Richard, additional, Hulme, William, additional, Rentsch, Christopher T, additional, Bhaskaran, Krishnan, additional, Walker, Alex J, additional, Morton, Caroline E, additional, Evans, David, additional, Mehrkar, Amir, additional, Bacon, Seb, additional, Bates, Chris, additional, Hickman, George, additional, Ward, Tom, additional, Morley, Jessica, additional, Cockburn, Jonathan, additional, Davy, Simon, additional, Schultze, Anna, additional, Williamson, Elizabeth, additional, McDonald, Helen I, additional, Tomlinson, Laurie, additional, Mathur, Rohini, additional, Eggo, Rosalind M, additional, Wing, Kevin, additional, Wong, Angel YS, additional, Forbes, Harriet, additional, Tazare, John, additional, Parry, John, additional, Hester, Frank, additional, Harper, Sam, additional, O’Hanlon, Shaun, additional, Eavis, Alex, additional, Jarvis, Richard, additional, Avramov, Dima, additional, Griffiths, Paul, additional, Fowles, Aaron, additional, Parkes, Nasreen, additional, Evans, Stephen JW, additional, Douglas, Ian J, additional, Smeeth, Liam, additional, and Goldacre, Ben, additional

Published
2021
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16. Trends and clinical characteristics of COVID-19 vaccine recipients: a federated analysis of 57.9 million patients’ primary care records in situ using OpenSAFELY.

Author

Curtis HJ, Inglesby P, Morton CE, MacKenna B, Green A, Hulme W, Walker AJ, Morley J, Mehrkar A, Bacon S, Hickman G, Bates C, Croker R, Evans D, Ward T, Cockburn J, Davy S, Bhaskaran K, Schultze A, Rentsch CT, Williamson EJ, Rowan A, Fisher L, McDonald HI, Tomlinson L, Mathur R, Drysdale H, Eggo RM, Wing K, Wong AY, Forbes H, Parry J, Hester F, Harper S, O'Hanlon S, Eavis A, Jarvis R, Avramov D, Griffiths P, Fowles A, Parkes N, Douglas IJ, Evans SJ, Smeeth L, and Goldacre B

Subjects
Cohort Studies, Humans, Primary Health Care, SARS-CoV-2, Vaccination, COVID-19, COVID-19 Vaccines
Abstract

Background: On 8 December 2020 NHS England administered the first COVID-19 vaccination., Aim: To describe trends and variation in vaccine coverage in different clinical and demographic groups in the first 100 days of the vaccine rollout., Design and Setting: With the approval of NHS England, a cohort study was conducted of 57.9 million patient records in general practice in England, in situ and within the infrastructure of the electronic health record software vendors EMIS and TPP using OpenSAFELY., Method: Vaccine coverage across various subgroups of Joint Committee on Vaccination and Immunisation (JCVI) priority cohorts is described., Results: A total of 20 852 692 patients (36.0%) received a vaccine between 8 December 2020 and 17 March 2021. Of patients aged ≥80 years not in a care home (JCVI group 2) 94.7% received a vaccine, but with substantial variation by ethnicity (White 96.2%, Black 68.3%) and deprivation (least deprived 96.6%, most deprived 90.7%). Patients with pre-existing medical conditions were more likely to be vaccinated with two exceptions: severe mental illness (89.5%) and learning disability (91.4%). There were 275 205 vaccine recipients who were identified as care home residents (JCVI group 1; 91.2% coverage). By 17 March, 1 257 914 (6.0%) recipients had a second dose., Conclusion: The NHS rapidly delivered mass vaccination. In this study a data-monitoring framework was deployed using publicly auditable methods and a secure in situ processing model, using linked but pseudonymised patient-level NHS data for 57.9 million patients. Targeted activity may be needed to address lower vaccination coverage observed among certain key groups., (© The Authors.)

Published
2021
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17. Clinical coding of long COVID in English primary care: a federated analysis of 58 million patient records in situ using OpenSAFELY.

Author

Walker AJ, MacKenna B, Inglesby P, Tomlinson L, Rentsch CT, Curtis HJ, Morton CE, Morley J, Mehrkar A, Bacon S, Hickman G, Bates C, Croker R, Evans D, Ward T, Cockburn J, Davy S, Bhaskaran K, Schultze A, Williamson EJ, Hulme WJ, McDonald HI, Mathur R, Eggo RM, Wing K, Wong AY, Forbes H, Tazare J, Parry J, Hester F, Harper S, O'Hanlon S, Eavis A, Jarvis R, Avramov D, Griffiths P, Fowles A, Parkes N, Douglas IJ, and Evans SJ

Subjects
Cohort Studies, England, Female, Humans, Male, Primary Health Care, Post-Acute COVID-19 Syndrome, COVID-19 complications, Clinical Coding
Abstract

Background: Long COVID describes new or persistent symptoms at least 4 weeks after onset of acute COVID-19. Clinical codes to describe this phenomenon were recently created., Aim: To describe the use of long-COVID codes, and variation of use by general practice, demographic variables, and over time., Design and Setting: Population-based cohort study in English primary care., Method: Working on behalf of NHS England, OpenSAFELY data were used encompassing 96% of the English population between 1 February 2020 and 25 May 2021. The proportion of people with a recorded code for long COVID was measured overall and by demographic factors, electronic health record software system (EMIS or TPP), and week., Results: Long COVID was recorded for 23 273 people. Coding was unevenly distributed among practices, with 26.7% of practices having never used the codes. Regional variation ranged between 20.3 per 100 000 people for East of England (95% confidence interval [CI] = 19.3 to 21.4) and 55.6 per 100 000 people in London (95% CI = 54.1 to 57.1). Coding was higher among females (52.1, 95% CI = 51.3 to 52.9) than males (28.1, 95% CI = 27.5 to 28.7), and higher among practices using EMIS (53.7, 95% CI = 52.9 to 54.4) than those using TPP (20.9, 95% CI = 20.3 to 21.4)., Conclusion: Current recording of long COVID in primary care is very low, and variable between practices. This may reflect patients not presenting; clinicians and patients holding different diagnostic thresholds; or challenges with the design and communication of diagnostic codes. Increased awareness of diagnostic codes is recommended to facilitate research and planning of services, and also surveys with qualitative work to better evaluate clinicians' understanding of the diagnosis., (© The Authors.)

Published
2021
Full Text
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