Baseline characteristics of participants included in the intention to treat analysis, by trial arm
| Characteristic | Intervention (N=551) n (%) | Control (N=575) n (%) | |
| Age (years) | Mean (SD) (range) | 33.2 (8.1) (20–50) | 33.0 (8.0)(18–50) |
| Marital status | Married | 445 (81%) | 461 (80%) |
| Divorced/separated | 52 (9%) | 62 (11%) | |
| Widowed | 26 (5%) | 26 (5%) | |
| Never married | 28 (5%) | 26 (5%) | |
| Partnered in past year | 503 (91%) | 527 (92%) | |
| Highest level of education completed | None/incomplete primary | 100 (18%) | 114 (20%) |
| Completed primary | 344 (62%) | 336 (58%) | |
| Attended secondary/higher | 107 (19%) | 125 (22%) | |
| Partner’s age (years) | Mean (SD) (range) | 39.6 (9.6)(20–77) | 39.4 (9.5)(22–68) |
| Partner’s education | None/incomplete primary | 45 (8%) | 36 (6%) |
| Completed primary | 332 (60%) | 331 (58%) | |
| Attended secondary or higher | 153 (28%) | 178 (31%) | |
| Unknown | 19 (3%) | 29 (5%) | |
| No of children (<18 years) | None | 24 (4%) | 29 (5%) |
| 1–2 | 186 (34%) | 234 (41%) | |
| 3–4 | 225 (41%) | 213 (37%) | |
| 5+ | 116 (21%) | 99 (17%) | |
| Household experienced financial hardship in past year | 385 (65%) | 344 (60%) | |
| Respondent worked for money during past 12 months | 443 (80%) | 461 (80%) | |
| Respondent’s monthly income (Tanzanian shillings) | Median (IQR) | 88 000* (55 000 to 154 000) | 110 000† (55 000 to 195 000) |
*Equivalent to approximately US$38 (US$24 to US$66).
†Equivalent to US$47 (US$24 to US$84).