Table 5.

Contraceptive measures in women with FFA.

First Author, Year	Type of Study	Studied Population	Contraceptive Method
Buendía-Castaño 2018 [54]	Case-control study	N1 = 104 female FFA patients N2 = 208 age-matched controls	N1 = 5 (4.8%) FFA patients with use of IUD N2 = 30 (14.4%) controls with use of IUD OR 0.22 [95% CI 0.06–0.84], p = 0.027 N3 = 104 (43.3%) patients who took oral contraceptives N4 = 103 (49.5%,) controls who took oral contraceptives
Panchaprateep 2020 [57]	Retro-prospective cohort study	N = 58 patients with FFA	N1 = 16 (27.6%) history of taking oral contraceptive N2 = 3 (5.2%) history of intrauterine device
Imhof 2018 [50]	Retrospective study	N = 148 female FFA patients	N1 = 26 [51%] history of oral contraceptive pill use
Mervis 2019 [59]	Retrospective study	N = 91 patients with FFA N1 = 87 women N2 = 4 men N3 = 59.6 years mean age	N1 = 11 (13%) women either using hormonal birth control or HRT at the time of the FFA diagnosis
Kanti 2019 [36]	Observational, cross-sectional study	N = 490 FFA patients N1 = 467 (95%) female FFA patients N2 = 23 (5%) male FFA patients N3 = 60 years mean age of onset of symptoms (IQR 53–68 years)	N1 = 21% hormonal contraception
Moreno-Arrones 2019 [14]	Case-control study	N1 = 578 women N2 = 289 women with FFA N3 = 289 female controls N4 = 77 men (FFA + controls)	N1 = 143 (49.5%) controls who took oral contraceptives N2 = 141 (48.8%) cases who took oral contraceptives p = 0.86
Meinhard 2014 [56]	Retrospective study	N1 = 31 women with FFA N2 = 1 man with FFA	N1 = 1 (3.2%) took oral contraceptives