Table 1.

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

	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)

N/A not available - numbers are too small for calculation

r^aAdjusted for all variables shown in table