Cite
When data are not missing at random: implications for measuring health conditions in the Behavioral Risk Factor Surveillance System.
MLA
Frankel, Martin R., et al. “When Data Are Not Missing at Random: Implications for Measuring Health Conditions in the Behavioral Risk Factor Surveillance System.” BMJ Open, vol. 2, no. 4, July 2012. EBSCOhost, https://doi.org/10.1136/bmjopen-2011-000696.
APA
Frankel, M. R., Battaglia, M. P., Balluz, L., & Strine, T. (2012). When data are not missing at random: implications for measuring health conditions in the Behavioral Risk Factor Surveillance System. BMJ Open, 2(4). https://doi.org/10.1136/bmjopen-2011-000696
Chicago
Frankel, Martin R, Michael P Battaglia, Lina Balluz, and Tara Strine. 2012. “When Data Are Not Missing at Random: Implications for Measuring Health Conditions in the Behavioral Risk Factor Surveillance System.” BMJ Open 2 (4). doi:10.1136/bmjopen-2011-000696.