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Table 1 Variables associated with recurrent unintended pregnancy among women serving in the IDF, 2013–2015

From: Recurrent unintended pregnancies among young unmarried women serving in the Israeli military

  No pregnancy Recurrent unintended pregnancy Unadjusted Relative risk Adjusteda Relative Risk
n = 127, 262 n = 389 (95% CI) (95% CI)
Body Mass Index
  < 18.5 13.0% 17.1% 1.43 (1.08–1.90) 1.27 (0.90–1.790)
 18.5–24.9 64.8% 59.6% Reference Reference
 25–29.9 16.4% 18.4% 1.22 (0.93–1.60) 0.97 (0.69–1.37)
  > 30 5.9% 4.9% 0.90 (0.56–1.45) 0.66 (0.37–1.16)
Education
 Less than high school 2.5% 21.9% 10.96 (8.59–13.98) 6.90 (4.99–9.55)
 High school graduate 96.6% 77.1% Reference Reference
 Higher education 0.9% 1.0% 1.36 (0.51–3.66) N/A
IQ score
 Low (90–99) 33.8% 78.4% 6.30 (4.93–8.07) 3.94 (2.88–5.39)
 Median (100–117.9) 56.4% 20.8% Reference Reference
 High (118+) 9.8% 0.8% 0.22 (0.07–0.69) 0.12 (0.02–0.86)
Immigration status
 1st generation 9.0% 17.2% 2.11 (1.62–2.75) 1.50 (0.84–2.67)
 2nd generation 34.5% 44.8% 1.54 (1.23–1.94) 1.18 (0.86–1.62)
 Longer term resident    Reference Reference
Country of origin
 Israel 16.8% 9.7% Reference Reference
 Western 20.8% 9.4% 0.79 (0.49–1.25) 0.81 (0.47–1.37)
 Sub-Saharan Africa 3.2% 17.5% 9.36 (6.29–14.08) 2.51 (1.37–4.59)
 Asia 19.4% 13.7% 1.23 (0.80–1.88) 0.84 (0.53–1.35)
 Former Soviet Union 18.3% 21.6% 2.03 (1.37–3.02) 0.91 (0.52–1.59)
 North-Africa 21.2% 28.0% 1.57 (0.76–3.35) 1.28 (0.84–1.94)
 Other 0.3% 0.0% N/A N/A
Neighborhood Socioeconomic Status
 Low (1–4) 20.1% 36.3% 1.85 (1.48–2.33) 1.56 (1.18–2.05)
 Median (5–7) 55.4% 54.1% Reference Reference
 High (8–10) 24.4% 9.6% 0.40 (0.28–0.58) 0.60 (0.38–0.93)
History of psychiatric illness 1.3% 1.3% 0.97 (0.40–2.35) 1.11 (0.41–3.02)
  1. N/A not available - numbers are too small for calculation
  2. raAdjusted for all variables shown in table