Table 4.
Covariates | Model 1 | Model 2 | Model 3 |
---|---|---|---|
RR (95% CI) | RR (95% CI ) | RR (95% CI) | |
Maternal education | |||
Primary (vs. No education) | 0.89 (0.82 0.95) | 0.92 (0.85 1.00) | 0.81 (0.69 0.95) |
Secondary (vs. No education) | 0.72 (0.67 0.78) | 0.82 (0.74 0.91) | 0.90 (0.74 1.10) |
Year of survey | |||
1999 (vs. 1996) | 0.62 (0.55 0.69) | 0.65 (0.58 0.72) | 0.67 (0.58 0.77) |
2004 (vs. 1996) | 0.74 (0.67 0.83) | 0.79 (0.71 0.88) | 0.77 (0.66 0.89) |
2007 (vs. 1996) | 0.92 (0.82 1.02) | 0.98 (0.88 1.09) | 0.90 (0.78 1.04) |
2011 (vs. 1996) | 0.84 (0.76 0.93) | 0.90 (0.81 1.01) | 0.88 (0.72 1.02) |
Maternal education × year of survey | |||
Primary × 1999 | 0.81 (0.67 1.00) | ||
Secondary × 1999 | 0.73 (0.58 0.92) | ||
Primary × 2004 | 0.92 (0.77 1.09) | ||
Secondary × 2004 | 0.85 (0.70 1.03) | ||
Primary × 2007 | 1.02 (0.86 1.21) | ||
Secondary × 2007 | 0.86 (0.73 1.05) | ||
Primary × 2011 | 1.02 (0.86 1.20) | ||
Secondary × 2011 | 0.81 (0.68 0.97) | ||
P‐value for overall interaction effect | 0.128 |
Model 1 is adjusted for maternal education and year of survey. Model 2 is adjusted for maternal education, year of survey, maternal age, maternal BMI, maternal working status, parity, paternal education and wealth quintile. Model 3 is adjusted for all covariates in model 2 plus the interaction between maternal education and year of survey.