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. Author manuscript; available in PMC: 2019 Jun 1.
Published in final edited form as: Matern Child Health J. 2018 Jun;22(6):922–931. doi: 10.1007/s10995-018-2468-3

Table 4.

Outcomes of pregnancies occurring while in the fire service (M[SD] or %)

ALL PREGNANCIES

First Second Third Fourth

Pregnancy (n=631) (n=363) (n=157) (n=60)
Age mean (SD) 29.7 (5.3) 31.8 (4.6) 33.2 (4.3) 34.2 (4.0)
Took fertility drugs 8.7 6.6 13.4 15.0
Length of pregnancy
 Less than 20 weeks (less than 4 months) 23.9 25.5 31.4 32.8
 20-28 weeks (4 to 6 months) 1.9 2.5 2.6 3.4
 More than 28 weeks (more than 6 months) 74.2 72.0 66.0 63.8
Result of pregnancy
 Live birth 73.1 71.9 64.3 60.0
 Miscarriage 22.6 25.9 30.6 31.7
 Terminated 2.4 0.8 1.9 3.3
 Still Pregnant 1.1 1.1 3.2 3.3
 Other 0.2 0.0 0.0 1.7

Birth outcomes (n=460) (n=259) (n=99) (n=36)

Baby weighed less than 5 lbs., 8 ozs. 5.9 3.9 7.1 11.1
Baby born more than 3 weeks before due date 12.2 11.6 13.1 16.7
Baby had jaundice at birth 32.9 29.3 24.2 16.7

Pregnancy complications (n=460) (n=259) (n=99) (n=36)

Diagnosed with gestational hypertension 8.0 5.8 6.1 8.3
Diagnosed with gestational diabetes 5.9 5.8 3.0 5.6

PREGNANCIES, WOMEN < 35 YEARS

First Second Third Fourth

Pregnancy (n=148) (n=69) (n=20) (n=3)

Age mean (SD) 27.0(3.4) 28.7(3.0) 29.1(2.9) 29.7(3.5)
Took fertility drugs 7.4 7.2 10.0 33.3
Length of pregnancy
 Less than 20 weeks (less than 4 months) 22.1 24.6 40.0 50.0
 20-28 weeks (4 to 6 months) 2.1 5.8 5.0 0.0
 More than 28 weeks (more than 6 months) 74.3 69.6 55.0 50.0
Result of pregnancy
 Live birth 71.6 68.1 50.0 33.3
 Miscarriage 22.3 27.5 45.0 33.3
 Terminated 1.4 0.0 0.0 0.0
 Still Pregnant 3.4 2.9 5.0 33.3
 Other 1.4 1.4 0.0 0.0

Birth outcomes (n=106) (n=47) (n=9) (n=1)

Baby weighed less than 5 lbs., 8 ozs. 3.8 4.3 0.0 0.0
Baby born more than 3 weeks before due date 9.4 14.9 22.2 0.0
Baby had jaundice at birth 36.8 36.2 22.2 0.0

Pregnancy complications

Diagnosed with gestational hypertension 9.4 8.5 22.2 0.0
Diagnosed with gestational diabetes 3.8 8.5 11.1 0.0

PREGNANCIES, WOMEN > 35 YEARS

First Second Third Fourth

Pregnancy (n=459) (n=278) (n=133) (n=56)

Age mean (SD) 30.6(5.5) 32.6(4.5) 33.8(3.9) 34.6(3.7)
Took fertility drugs 9.4 6.5 14.3 14.3
Length of pregnancy
 Less than 20 weeks (less than 4 months) 24.6 26.4 31.1 32.7
 20-28 weeks (4 to 6 months) 1.8 1.4 2.3 3.6
 More than 28 weeks (more than 6 months) 73.6 72.1 66.7 63.6
Result of pregnancy
 Live birth 73.4 72.3 65.4 60.7
 Miscarriage 22.9 25.9 29.3 32.1
 Terminated 2.6 1.1 2.3 3.6
 Still Pregnant 0.4 0.7 3.0 1.8
 Other 0.6 0.0 0.0 0.0

Birth outcomes (n=336) (n=200) (n=85) (n=34)

Baby weighed less than 5 lbs., 8 ozs. 6.8 4.0 7.1 11.8
Baby born more than 3 weeks before due date 13.1 11.6 12.8 17.6
Baby had jaundice at birth 32.0 27.1 24.4 17.6

Pregnancy complications

Diagnosed with gestational hypertension 8.0 5.6 4.7 5.9
Diagnosed with gestational diabetes 6.8 5.6 2.3 2.9