Table 4

Distribution of use of oral contraceptives by selected variables from the cardinal data set among 1772 controls in the United Kingdom and Germany. Values are numbers (percentages) of subjects

Users of oral contraceptives*
Non-users (n=1028)1st Generation (n=59)2nd Generation (n=402)3rd Generation (n=249)
Age (years):
  16–24206 (20.0)11 (18.6)147 (36.6)128 (51.4)
  25–34372 (36.2)23 (39.0)177 (44.0)99 (39.8)
  35–44450 (43.8)25 (42.4)78 (19.4)22 (8.8)
Body mass index >/=30127 (1.4)5 (8.5)26 (6.5)12 (4.8)
Alcohol intake (No of drinks):
  >1 monthly and <1 weekly365 (35.5)11 (18.6)160 (39.8)104 (41.8)
   >1 weekly204 (19.8)11 (18.6)73 (18.2)62 (24.9)
Smoking
  Current smoker379 (36.9)28 (47.5)169 (42.0)97 (38.9)
Medical history:
  Hypertension71 (5.1)3 (5.1)18 (4.5)9 (3.6)
  Diabetes16 (1.7)1 (1.7)1 (0.3)2 (0.8)
  Pre-eclampsia57 (1.7)1 (1.7)9 (2.2)4 (1.8)
Year of accession:
  1993111 (10.8)13 (22.0)50 (12.4)18 (7.2)
  1994604 (58.8)32 (54.3)249 (61.9)147 (59.0)
  1995313 (30.4)14 (23.7)103 (25.6)84 (33.7)
  • *Users of progesterone only pills (17 cases, 34 controls) not classified as users of first, second, or third generation oral contraceptives.