Table 3 Change in maternal mortality rates according to the ICD-MM classification compared with the old classification system
3-year period | Direct deaths | Indirect deaths | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Old classification | New classification | Change in rate compared to old classification | Old classification | New classification | Change in rate compared to old classification | |||||||||
Rate | 95 % CI | Rate | 95 % CI | Rate ratio | 95 % CI | p-value | Rate | 95 % CI | Rate | 95 % CI | Rate ratio | 95 % CI | p-value | |
2003–05 | 6.24 | 5.26–7.41 | 6.76 | 5.70–7.97 | 1.08 | 0.85 to 1.38 | 0.508 | 7.71 | 6.61–8.99 | 7.19 | 6.09–8.43 | 0.93 | 0.74 to 1.17 | 0.536 |
2004–06 | 5.45 | 4.55–6.53 | 5.73 | 4.76–6.83 | 1.05 | 0.81 to 1.36 | 0.700 | 7.11 | 6.07–8.33 | 6.83 | 5.78–8.03 | 0.96 | 0.76 to 1.21 | 0.730 |
2005–07 | 5.09 | 4.23–6.12 | 5.40 | 4.48–6.46 | 1.06 | 0.81 to 1.39 | 0.647 | 6.57 | 5.59–7.73 | 6.26 | 5.26–7.39 | 0.95 | 0.75 to 1.21 | 0.679 |
2006–08 | 4.67 | 3.86–5.64 | 5.24 | 4.34–6.26 | 1.12 | 0.86 to 1.47 | 0.389 | 6.72 | 5.74–7.87 | 6.15 | 5.18–7.26 | 0.92 | 0.72 to 1.16 | 0.449 |
2007–09 | 4.33 | 3.53–5.26 | 4.80 | 3.95–5.78 | 1.11 | 0.84 to 1.47 | 0.452 | 6.56 | 5.56–7.69 | 6.09 | 5.13–7.18 | 0.93 | 0.73 to 1.17 | 0.523 |
2008–10 | 3.76 | 3.02–4.63 | 4.18 | 3.40–5.09 | 1.11 | 0.83 to 1.50 | 0.467 | 7.27 | 6.22–8.44 | 6.85 | 5.83–7.99 | 0.94 | 0.76 to 1.17 | 0.585 |
2009–11 | 3.49 | 2.78–4.32 | 3.78 | 3.04–4.65 | 1.08 | 0.80 to 1.48 | 0.596 | 7.15 | 6.11–8.30 | 6.85 | 5.84–7.99 | 0.96 | 0.77 to 1.20 | 0.702 |
2010–12 | 3.25 | 2.57–4.05 | 3.71 | 2.98–4.56 | 1.14 | 0.83 to 1.57 | 0.396 | 6.87 | 5.86–8.00 | 6.41 | 5.44–7.51 | 0.93 | 0.74 to 1.17 | 0.539 |
2011–13 | 2.91 | 2.26–3.68 | 3.50 | 2.79–4.34 | 1.20 | 0.86 to 1.68 | 0.258 | 6.11 | 5.16–7.19 | 5.52 | 4.62–6.55 | 0.90 | 0.71 to 1.15 | 0.436 |