Logistic regression model: sociodemographic and clinical factors associated with using abortion to prevent (nulliparous women) versus limit (parous women) births (N = 46,526)
| Variable | OR (95% CI) |
| Age (years) | |
| 12–17 | 14.73** (11.89–18.24) |
| 18–24 | 3.60** (3.05–4.24) |
| Age reference category: 25–29 years old | – |
| Age (years) | |
| 30–39 | 0.32** (0.30–0.34) |
| 40–54 | 0.18** (0.16–0.21) |
| Occupation reference category: Unemployed/Homemaker | – |
| Occupation | |
| Employed | 5.68** (3.35–9.62) |
| Student | 6.09** (3.61–10.27) |
| State reference category: Mexico City | – |
| State | |
| Any other state | 1.16** (1.08–1.26) |
The outcome variable has a value of 1 for preventing (nulliparous) and 0 for limiting (parous).
The model also controls for year and clusters on clinical site.
**p<0.01, .