Table 2. Overview of sample.

Characteristic	measure of central tendency/%	Total sample (n = 1381)	Treatment group (n = 631)	Control group (n = 750)	p-value	effect size
Age	Mean (SD)	33.5 (11.7)	33.6 (11.8)	33.4 (11.6)	.647	0.03
N children	Median (IQR)
aged 0–5		1 (0–2)	1 (0–2)	1 (0–1)	< .001	0.10
aged 0–18		3 (2–4)	3 (2–4)	2 (1–4)	< .001	0.11
Household size	Median (IQR)	5 (4–6)	5 (4–6)	5 (3–6)	< .001	0.10
Marital status	N (%)				< .001	0.17
Never married		104 (7.5)	19 (3.0)	85 (11.3)
Traditionally or legally married		1069 (77.4)	515 (81.6)	554 (73.8)
Divorced/separated		129 (9.3)	51 (8.1)	78 (10.4)
Widowed		69 (5.3)	39 (6.2)	30 (4.0)
Literacy	Median (IQR)	0 (0–1)	0 (0–1)	0 (0–1)	.006	0.12
RSES total	Mean (SD)	15.6 (2.8)	15.9 (2.5)	15.3 (3.1)	< .001	0.20

Notes: p-values for age and RSES total score are based on two-sample t-tests on the equality of mean; Cohen’s d is reported for effect size; p-values for literacy, numbers of children and household size are based on Mann-Whitney's U test on the equality of mean ranks, r is reported for effect size; Marital status difference is based on Cramer’s V Association.