Table 3.

Rate ratio (RR) and rate difference (RD) with the corresponding 95% confidence intervals (CI) for association between subsidy introduction and skilled birth attendance over time, across the socioeconomic status strata

Time since subsidy introduction (months)Lowest SES
Middle SES
Highest SES
RR (95% CI)RD (95% CI)RR (95% CI)RD (95% CI)RR (95% CI)RD (95% CI)
01.45 (1.19–1.77)14.0% (3.5–24.5%)1.28 (1.09–1.49)6.7% (−2.7 to 16.2%)1.19 (1.02–1.38)1.0% (−8.1 to 10.1%)
61.46 (1.20–1.78)14.1% (3.5–24.6%)1.28 (1.10–1.49)6.8% (−2.6 to 16.2%)1.19 (1.03–1.37)1.0% (−8.1 to 10.2%)
121.47 (1.20–1.78)14.1% (3.6–24.6%)1.29 (1.11–1.50)6.8% (−2.6 to 16.3%)1.20 (1.04–1.37)1.0% (−8.1 to 10.2%)
181.47 (1.21–1.79)14.2% (3.6–24.7%)1.29 (1.11–1.50)6.8% (−2.6 to 16.3%)1.20 (1.05–1.38)1.1% (−8.1 to 10.2%)
241.48 (1.21–1.81)14.2% (3.7–24.8%)1.30 (1.11–1.51)6.9% (−2.6 to 16.3%)1.21 (1.06–1.38)1.1% (−8.1 to 10.3%)
Time since subsidy introduction (months)Lowest SES
Middle SES
Highest SES
RR (95% CI)RD (95% CI)RR (95% CI)RD (95% CI)RR (95% CI)RD (95% CI)
01.45 (1.19–1.77)14.0% (3.5–24.5%)1.28 (1.09–1.49)6.7% (−2.7 to 16.2%)1.19 (1.02–1.38)1.0% (−8.1 to 10.1%)
61.46 (1.20–1.78)14.1% (3.5–24.6%)1.28 (1.10–1.49)6.8% (−2.6 to 16.2%)1.19 (1.03–1.37)1.0% (−8.1 to 10.2%)
121.47 (1.20–1.78)14.1% (3.6–24.6%)1.29 (1.11–1.50)6.8% (−2.6 to 16.3%)1.20 (1.04–1.37)1.0% (−8.1 to 10.2%)
181.47 (1.21–1.79)14.2% (3.6–24.7%)1.29 (1.11–1.50)6.8% (−2.6 to 16.3%)1.20 (1.05–1.38)1.1% (−8.1 to 10.2%)
241.48 (1.21–1.81)14.2% (3.7–24.8%)1.30 (1.11–1.51)6.9% (−2.6 to 16.3%)1.21 (1.06–1.38)1.1% (−8.1 to 10.3%)
Table 3.

Rate ratio (RR) and rate difference (RD) with the corresponding 95% confidence intervals (CI) for association between subsidy introduction and skilled birth attendance over time, across the socioeconomic status strata

Time since subsidy introduction (months)Lowest SES
Middle SES
Highest SES
RR (95% CI)RD (95% CI)RR (95% CI)RD (95% CI)RR (95% CI)RD (95% CI)
01.45 (1.19–1.77)14.0% (3.5–24.5%)1.28 (1.09–1.49)6.7% (−2.7 to 16.2%)1.19 (1.02–1.38)1.0% (−8.1 to 10.1%)
61.46 (1.20–1.78)14.1% (3.5–24.6%)1.28 (1.10–1.49)6.8% (−2.6 to 16.2%)1.19 (1.03–1.37)1.0% (−8.1 to 10.2%)
121.47 (1.20–1.78)14.1% (3.6–24.6%)1.29 (1.11–1.50)6.8% (−2.6 to 16.3%)1.20 (1.04–1.37)1.0% (−8.1 to 10.2%)
181.47 (1.21–1.79)14.2% (3.6–24.7%)1.29 (1.11–1.50)6.8% (−2.6 to 16.3%)1.20 (1.05–1.38)1.1% (−8.1 to 10.2%)
241.48 (1.21–1.81)14.2% (3.7–24.8%)1.30 (1.11–1.51)6.9% (−2.6 to 16.3%)1.21 (1.06–1.38)1.1% (−8.1 to 10.3%)
Time since subsidy introduction (months)Lowest SES
Middle SES
Highest SES
RR (95% CI)RD (95% CI)RR (95% CI)RD (95% CI)RR (95% CI)RD (95% CI)
01.45 (1.19–1.77)14.0% (3.5–24.5%)1.28 (1.09–1.49)6.7% (−2.7 to 16.2%)1.19 (1.02–1.38)1.0% (−8.1 to 10.1%)
61.46 (1.20–1.78)14.1% (3.5–24.6%)1.28 (1.10–1.49)6.8% (−2.6 to 16.2%)1.19 (1.03–1.37)1.0% (−8.1 to 10.2%)
121.47 (1.20–1.78)14.1% (3.6–24.6%)1.29 (1.11–1.50)6.8% (−2.6 to 16.3%)1.20 (1.04–1.37)1.0% (−8.1 to 10.2%)
181.47 (1.21–1.79)14.2% (3.6–24.7%)1.29 (1.11–1.50)6.8% (−2.6 to 16.3%)1.20 (1.05–1.38)1.1% (−8.1 to 10.2%)
241.48 (1.21–1.81)14.2% (3.7–24.8%)1.30 (1.11–1.51)6.9% (−2.6 to 16.3%)1.21 (1.06–1.38)1.1% (−8.1 to 10.3%)
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