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. Author manuscript; available in PMC: 2014 Aug 1.
Published in final edited form as: Paediatr Perinat Epidemiol. 2011 Jun 20;25(5):413–424. doi: 10.1111/j.1365-3016.2011.01205.x

Table 2.

Reasons for ineligibility by site, LIFE Study, 2005–09

Reason – screened ineligible Michigan site (19 486) n (%) Texas site (31 041) n (%) Total (50 527) n (%)
Age 5840 (30) 7611 (25) 13 451 (27)
Not interested in becoming pregnant 1683 (9) 8131 (26) 9814 (19)
Not in committed relationship 1760 (9) 7684 (25) 9444 (19)
Moved or is moving outside study area 7031 (36) 1256 (4) 8287 (16)
Surgically sterile/unable 1467 (8) 1823 (6) 3290 (7)
Off contraception >2 months 801 (4) 1835 (6) 2636 (5)
Currently pregnant 257 (1) 1694 (5) 1951 (4)
Menstrual cycles outside range 328 (2) 727 (2) 1055 (2)
Birth control shota in past 12 months 46 (<1) 30 (<1) 76 (<1)
Not sexually active 71 (<1) 71 (<1)
Other 202 (1) 250 (<1) 452 (<1)
a

Injection.