Aydin, H, Celik, O, Yazici, D, Altunok, C, Tarcin, O, Deyneli, O, Sancak, S, Kiyici, S, Aydin, K, Yildiz, BO, Cakiroglu, AY, Ozer, A, Tuzcu, AK, Kan, A, Celik, A, Uysal, A, Atmaca, A, Evren, B, Taskiran, B, Bilir, BE, Duran, C, Arpaci, D, Tuzun, D, Kavak, EC, Aydeniz, E, Akbas, EM, Ustunyurt, E, Bil, E, Guney, E, Akbaba, E, Gurkan, E, Cagliyan, E, Karakilic, E, Karakas, E, Kilinc, F, Soylemez, F, Kucukler, FK, Yorulmaz, G, Akbaba, G, Uysal, G, Kurt, G, Yaylali, GF, Selimoglu, H, Sari, H, Piskinpasa, H, Celik, H, Peynirci, H, Bilal, I, Sahin, I, Gozukara, I, Anaforoglu, I, Senyuva, I, Ugur, K, Dogan, K, Keskin, L, Mert, M, Adas, M, Tonguc, M, Eroglu, M, Kulaksizoglu, M, Ozcan, M, Cinar, N, Kutbay, NO, Dikbas, O, Bakiner, O, Turhan, OT, Tutuncuoglu, P, Sari, R, Melekoglu, R, Ayaz, R, Emral, R, Mumusoglu, S, Gorar, S, Keskek, SO, Tosun, SA, Cetinkaya, SE, Temizkan, S, Unsal, S, Demir, T, Yuce, T, Aksoy, U, Cinkir, U, Simsek, Y, Uyar, Y, Turk, Y, Pekkolay, Z, Hekimsoy, Z, Canturk, Z, and Uc, ZA
Aim Prevalence rates of gestational diabetes mellitus (GDM) show considerable variation among different countries and regions of the world. The primary aim of this study was to determine the nationwide prevalence and predictors of GDM in Turkey. Methods We conducted prospective nationwide screening among pregnant women. Between August 2016 and November 2017, a total of 2643 pregnant women from 51 centres in 12 different regions were enrolled. A two-step screening method and Carpenter and Coustan criteria were used in the diagnosis of GDM. Clinical and biochemical data were obtained using electronic database software. Results The national prevalence of GDM was found to be 16.2% [95% confidence intervals (CI) 15.0% to 17.4%] without a significant difference between urban and rural regions. Women with GDM were older (mean age: 32 +/- 5 vs. 28 +/- 5 years, P < 0.001) and heavier (mean BMI: 27.2 +/- 5.1 vs. 24.7 +/- 4.7 kg/m(2), P < 0.001) than their counterparts without GDM. The prevalence of GDM tended to increase with age (< 25 years, 6.9%; 26-35 years, 15.6%; and 36-45 years, 32.7%; P < 0.001). Maternal age, maternal BMI, history of previous GDM and family history of diabetes mellitus were independent predictors of developing GDM (P < 0.05 for all). Low-risk women (age < 25 years, BMI < 25 kg/m(2), no family history of diabetes) comprised 10.7% of the total population and the prevalence of GDM in these women was 4.5% (95% CI 2.4% to 7.8%). Conclusion The results of this nationwide study indicate that GDM is very common, affecting one in seven pregnancies in Turkey. Implementation of international guidelines on screening and management of this public health problem is required. C1 [Aydin, H.] Acibadem Univ, Med Fac, Dept Endocrinol & Metab, Istanbul, Turkey. [Celik, O.] Acibadem Univ, Med Fac, Dept Endocrinol & Metab, Istanbul, Turkey. [Yazici, D.] Koc Univ, Med Fac, Dept Endocrinol & Metab, Istanbul, Turkey. [Altunok, C.; Deyneli, O.] Yeditepe Univ, Med Fac, Dept Biostat, Istanbul, Turkey. [Tarcin, O.] Marmara Univ, Med Fac, Dept Endocrinol & Metab, Istanbul, Turkey. [Sancak, S.] Fatih Sultan Mehmet Educ & Res Hosp, Dept Endocrinol & Metab, Istanbul, Turkey. [Kiyici, S.] Univ Hlth Sci, Bursa Yuksek Ihtisas Educ & Training Hosp, Dept Endocrinol & Metab, Bursa, Turkey. [Aydin, K.] Lutfi Kirdar Educ & Training Hosp, Dept Endocrinol & Metab, Istanbul, Turkey. [Yildiz, B. O.] Hacettepe Univ, Sch Med, Div Endocrinol & Metab, Dept Internal Med, Ankara, Turkey. [Cakiroglu, Ahmet Yigit] Kocaeli Univ, Med Fac, Dept Gynecol & Obstet, Kocaeli, Turkey. [Ozer, Alev] Sutcu Imam Univ, Med Fac, Dept Gynecol & Obstet, Kahramanmaras, Turkey. [Tuzcu, Alparslan Kemal; Pekkolay, Zafer] Dicle Univ, Dept Endocrinol & Metab, Med Fac, Diyarbakir, Turkey. [Kan, Atilla] Tekirdag Govt Hosp, Dept Gynecol & Obstet, Tekirdag, Turkey. [Celik, Ayhan] Fatih Sultan Mehmet Educ & Res Hosp, Dept Gynecol & Obstet, Istanbul, Turkey. [Uysal, Aysel] Antalya Educ & Res Hosp, Dept Gynecol & Obstet, Antalya, Turkey. [Atmaca, Aysegul] OndokuzMayi Univ, Med Fac, Dept Endocrinol & Metab, Samsun, Turkey. [Evren, Bahri] Inonu Univ, Med Fac, Dept Endocrinol & Metab, Malatya, Turkey. [Taskiran, Bengur] Yunus Emre Educ & Res Hosp, Dept Endocrinol & Metab, Eskisehir, Turkey. [Bilir, Betul Ekiz] Tekirdag Govt Hosp, Dept Endocrinol & Metab, Tekirdag, Turkey. [Duran, Cevdet] Usak Univ, Med Fac, Dept Endocrinol & Metab, Usak, Turkey. [Arpaci, Dilek] Bulent Ecevit Univ, Dept Endocrinol & Metab, Med Fac, Zonguldak, Turkey. [Tuzun, Dilek] Sutcu Imam Univ, Dept Endocrinol & Metab, Med Fac, Kahramanmaras, Turkey. [Kavak, Ebru Celik] Firat Univ, Med Fac, Dept Gynecol & Obstet, Elazig, Turkey. [Aydeniz, Elif] Acibadem Univ, Dept Gynecol & Obstet, Med Fac, Istanbul, Turkey. [Akbas, Emin Murat] Erzincan Univ, Med Fac, Dept Endocrinol & Metab, Erzincan, Turkey. [Ustunyurt, Emin] Bursa YuksesIhtisas Educ & Res Hosp, SBU, Dept Gynecol & Obstet, Bursa, Turkey. [Bil, Enes] Mehmet Akif Inan Educ & Res Hosp, Dept Gynecol & Obstet, Sanliurfa, Turkey. [Guney, Engin] Adnan Menderes Univ, Med Fac, Dept Endocrinol & Metab, Aydin, Turkmenistan. [Akbaba, Eren; Akbaba, Gulhan; Cinar, Nese] Sitki Kocman Univ, Med Fac, Dept Endocrinol & Metab, Mugla, Turkey. [Gurkan, Eren; Karakas, Esra] Mustafa Kemal Univ, Med Fac, Dept Endocrinol & Metab, Antakya, Turkey. [Cagliyan, Erkan] Dokuz Eylul Univ, Med Fac, Dept Gynecol & Obstet, Izmir, Turkey. [Karakilic, Ersen] Canakkale 18 Mart Univ, Med Fac, Dept Endocrinol & Metab, Canakkale, Turkey. [Kilinc, Faruk] Elazig Educ & Res Hosp, Dept Endocrinol & Metab, Elazig, Turkey. [Soylemez, Feride; Cetinkaya, Serife Esra; Yuce, Tuncay] Ankara Univ, Med Fac, Dept Gynecol & Obstet, Ankara, Turkey. [Kucukler, Ferit Kerim] Hitit Univ, Med Fac, Dept Endocrinol & Metab, Corum, Turkey. [Yorulmaz, Goknur] Osmangazi Univ, Med Fac, Dept Endocrinol & Metab, Eskisehir, Turkey. [Uysal, Gulsum] Adana Numune Educ & Res Hosp, Dept Gynecol & Obstet, Adana, Turkey. [Kurt, Gursel] Bandirma Private Hosp, Dept Gynecol & Obstet, Balikesir, Turkey. [Yaylali, Guzin Fidan] Pamukkale Univ, Med Fac, Dept Endocrinol & Metab, Denizli, Turkey. [Selimoglu, Hadi] Bandirma Private Hosp, Dept Endocrinol & Metab, Balikesir, Turkey. [Sari, Hakan] Bagcilar Educ & Res Hosp, Dept Internal Med, Istanbul, Turkey. [Piskinpasa, Hamide; Mert, Meral] Bakirkoy Dr Sadi Konuk Educ & Res Hosp, SBU, Dept Endocrinol & Metab, Istanbul, Turkey. [Celik, Handan] Ondokuz Mayis Univ, Med Fac, Dept Gynecol & Obstet, Samsun, Turkey. [Peynirci, Hande] Kastamonu Govt Hosp, Dept Endocrinol & Metab, Kastamonu, Turkey. [Bilal, Isil] Adana Gynecol & Childrens Hosp, Dept Internal Med, Adana, Turkey. [Sahin, Ibrahim] Inonu Univ, Med Fac, Dept Endocrinol & Metab, Malatya, Turkey. [Gozukara, Ilay] Mustafa Kemal Univ, Med Fac, Dept Gynecol & Obstet, Antakya, Turkey. [Anaforoglu, Inan] Med Pk Hosp, Dept Endocrinol & Metab, Trabzon, Turkey. [Senyuva, Irem] Usak Univ, Med Fac, Dept Gynecol & Obstet, Usak, Turkey. [Ugur, Kader] Firat Univ, Med Fac, Dept Endocrinol & Metab, Elazig, Turkey. [Dogan, Keziban] Bakirkoy Dr Sadi Konuk Educ & Res Hosp, SBU, Dept Gynecol & Obstet, Istanbul, Turkey. [Keskin, Lezzan] Malatya Educ & Res Hosp, Dept Endocrinol & Metab, Malatya, Turkey. [Adas, Mine] Okmeydani Educ & Res Hosp, SBU, Dept Endocrinol & Metab, Istanbul, Turkey. [Tonguc, Mensure] Kastamonu Govt Hosp, Dept Gynecol & Obstet, Kastamonu, Turkey. [Eroglu, Mustafa] Hakkari Govt Hosp, Dept Endocrinol & Metab, Hakkari, Turkey. [Kulaksizoglu, Mustafa] Necmettin Erbakan Univ, Med Fac, Dept Endocrinol & Metab, Konya, Turkey. [Ozcan, Muge] Mehmet Akif Inan Educ & Res Hosp, Dept Endocrinol & Metab, Sanliurfa, Turkey. [Kutbay, Nilufer Ozdemir] Gazi Yasargil Educ & Res Hosp, Dept Endocrinol & Metab, Diyarbakir, Turkey. [Dikbas, Oguz] Giresun Univ, Med Fac, Dept Endocrinol & Metab, Giresun, Turkey. [Bakiner, Okan] Baskent Univ, Med Fac, Dept Endocrinol & Metab, Adana, Turkey. [Turhan, Omer Talip] Kartal Lutfi Kirdar Educ & Res Hosp, SBU, Dept Gynecol & Obstet, Istanbul, Turkey. [Tutuncuoglu, Pelin] Katip Celebi Univ, Med Fac, Dept Endocrinol & Metab, Izmir, Turkey. [Sari, Ramazan] Akdeniz Univ, Med Fac, Dept Endocrinol & Metab, Antalya, Turkey. [Melekoglu, Rauf] Inonu Univ, Dept Gynecol & Obstet, Malatya, Turkey. [Ayaz, Reyhan] Van Educ & Res Hosp, Dept Gynecol & Obstet, Van, Turkey. [Emral, Rifat] Ankara Univ, Med Fac, Dept Endocrinol & Metab, Ankara, Turkey. [Mumusoglu, Sezcan] Hacettepe Univ, Sch Med, Dept Gynecol & Obstet, Ankara, Turkey. [Gorar, Suheyla] Antalya Educ & Res Hosp, Dept Endocrinol & Metab, Antalya, Turkey. [Keskek, Sakir Ozgur] Adana Numune Educ & Res Hosp, Dept Internal Med, Adana, Turkey. [Tosun, Sebnem Alanya] Giresun Univ, Med Fac, Dept Gynecol & Obstet, Adana, Turkey. [Temizkan, Sule] Yeditepe Univ, Med Fac, Dept Endocrinol & Metab, Istanbul, Turkey. [Unsal, Sule] Canakkale Govt Hosp, Dept Gynecol & Obstet, Canakkale, Turkey. [Demir, Tevfik] Dokuz Eylul Univ, Med Fac, Dept Endocrinol & Metab, Izmir, Turkey. [Aksoy, Ulku] Mem Hosp, Dept Gynecol & Obstet, Kayseri, Turkey. [Cinkir, Umit] Van Educ & Res Hosp, Dept Endocrinol & Metab, Van, Turkey. [Simsek, Yasin] Mem Hosp, Dept Endocrinol & Metab, Kayseri, Turkey. [Uyar, Yildiz] Celal Bayar Univ, Med Fac, Dept Gynecol & Obstet, Manisa, Turkey. [Turk, Yusuf] Eskisehir Govt Hosp, Dept Gynecol & Obstet, Eskisehir, Turkey. [Hekimsoy, Zeliha] Celal Bayar Univ, Med Fac, Dept Endocrinol & Metab, Manisa, Turkey. [Canturk, Zeynep] Kocaeli Univ, Med Fac, Dept Endocrinol & Metab, Kocaeli, Turkey. [Uc, Ziynet Alphan] Usak Univ, Med Fac, Dept Endocrinol & Metab, Usak, Turkey.