Table 4.

Multivariable model for factors associated with cumulative number of pregnancies during study period

	Unadjusted IRR and 95% CI	Adjusteda IRR and 95% CI
High CMD symptoms at 1 time point	0.92 (0.81–1.04)	0.97 (0.85–1.11)
High CMD symptoms at 2 or more time points	0.99 (0.83–1.18)	1.06 (0.88–1.27)
Maternal education	0.93 (0.83–1.04)	0.94 (0.83–1.06)
Paternal education	1.02 (0.94–1.12)	1.03 (0.94–1.13)
Religion (Orthodox Christian as reference)
Muslim	1.14 (1.01–1.30)*	1.14 (1.00–1.30)*
Catholic/Protestant	1.21 (0.99–1.47)*	1.22 (1.01–1.49)*
Parity at baseline (0–1 as reference)
2–4	0.88 (0.80–0.98)*	0.95 (0.83–1.08)
≥5	0.72 (0.64–0.81)***	0.83 (0.68–1.01)
Polygamous marriage	0.88 (0.78–0.99)*	0.92 (0.81–1.04)
Marital discord at 1 time point	0.99 (0.88–1.10)	0.99 (0.88–1.10)
2+ time points	0.97 (0.87–1.07)	1.04 (0.93–1.16)
Reporting contraception use at 1–2 time points	0.96 (0.88–1.06)	0.91 (0.83–1.00)
Reporting contraception use at 3 time points	0.88 (0.73–1.06)	0.82 (0.68–0.99)*
Low SES score
1 time point	0.96 (0.86–1.08)	0.95 (0.84–1.07)
2+ time points	0.99 (0.88–1.12)	1.00 (0.88–1.14)
Age	0.98 (0.97–0.99)***	0.99 (0.97–1.00)*
Poor self-reported physical health
1–2 time points	0.98 (0.87–1.12)	1.00 (0.88–1.14)
3 or more time points	0.94 (0.83–1.06)	0.98 (0.86–1.12)

*p ≤ 0.05; **p ≤ 0.01; ***p ≤ 0.001.

^aAdjusted model = multiple Poisson regression with all variables included.