Binomial regression models to assess risk factors for repeat abortion
| ONE-AT-A-TIME ANALYSIS | BEST-FITTING MULTIVARIABLE ANALYSIS | |||||
|---|---|---|---|---|---|---|
| VARIABLE | RATE RATIO | 95% CI | P VALUE | RATE RATIO | 95% CI | P VALUE |
| Immigrant status | ||||||
| • Born in Canada | 1.00 | Reference | NA | 1.00 | Reference | NA |
| • Immigrant < 10 y in Canada | 0.79 | 0.57–1.08 | .133 | 0.66 | 0.48–0.91 | .011 |
| • Immigrant ≥ 10 y in Canada | 1.48 | 1.21–1.82 | < .001 | 1.27 | 1.02–1.59 | .035 |
| Age, y | ||||||
| • ≤19 | 0.37 | 0.23–0.58 | < .001 | 0.38 | 0.23–0.60 | < .001 |
| • 20–24 | 0.73 | 0.58–0.92 | .008 | 0.74 | 0.59–0.93 | .010 |
| • 25–29 | 1.00 | Reference | NA | 1.00 | Reference | NA |
| • 30–34 | 1.12 | 0.90–1.39 | .323 | 1.08 | 0.88–1.34 | .453 |
| • 35–39 | 0.95 | 0.73–1.24 | .703 | 0.83 | 0.63–1.09 | .180 |
| • ≥ 40 | 0.74 | 0.44–1.24 | .249 | 0.67 | 0.40–1.12 | .126 |
| High school education or less | 1.00 | 0.84–1.19 | .976 | 1.17 | 0.98–1.40 | .083 |
| No children | 0.60 | 0.50–0.72 | < .001 | 0.68 | 0.56–0.82 | < .001 |
| Income of $42 000 or less | 0.91 | 0.77–1.09 | .325 | NA | NA | NA |
| Religious beliefs affected decision making | 0.99 | 0.81–1.21 | .911 | NA | NA | NA |
| Relationship status | ||||||
| • Married, common law, living together, or engaged | 1.00 | Reference | NA | NA | NA | NA |
| • Single, divorced, or separated | 0.91 | 0.76–1.09 | .293 | NA | NA | NA |
| • In a relationship | 0.70 | 0.48–1.03 | .071 | NA | NA | NA |
| Employment status | ||||||
| • Employed | 1.00 | Reference | NA | NA | NA | NA |
| • Student or homemaker | 0.94 | 0.76–1.17 | .592 | NA | NA | NA |
| • Unemployed | 0.89 | 0.60–1.30 | .539 | NA | NA | NA |
NA—not applicable.