| Years/period | OMD | NLB | MMR (95% CI) | EMD | SMR | p Value |
| 1996 | 11 | 362 626 | 3.0 (1.7 to 5.5) | Reference | Reference | 0.079* |
| 1997 | 8 | 369 035 | 2.2 (1.1 to 4.3) | 11 | 0.7 (0.5 to 1.1) | |
| 1998 | 10 | 365 193 | 2.7 (1.5 to 5.1) | 11 | 0.9 (0.6 to 1.3) | |
| 1999 | 15 | 380 130 | 4.0 (2.4 to 6.5) | 11 | 1.3 (0.9 to 1.7) | |
| 2000 | 14 | 397 632 | 3.5 (2.1 to 5.9) | 12 | 1.2 (0.9 to 1.6) | |
| 2001 | 17 | 406 380 | 4.2 (2.6 to 6.7) | 12 | 1.4 (0.9 to 1.8) | |
| 2002 | 14 | 418 846 | 3.3 (2.0 to 5.6) | 13 | 1.1 (0.8 to 1.5) | |
| 2003 | 20 | 441 881 | 4.5 (2.9 to 7.0) | 13 | 1.5 (1.2 to 1.9) | |
| 2004 | 21 | 454 591 | 4.6 (3.0 to 7.1) | 14 | 1.5 (1.2 to 2.0) | |
| 2005 | 18 | 466 371 | 3.9 (2.4 to 6.1) | 14 | 1.3 (0.9 to 1.7) | |
| 1996–2000 | 58 | 1 874 616 | 3.1 (2.4 to 4.0) | Reference | Reference | 0.089** |
| 2001–2005 | 90 | 2 188 069 | 4.1 (3.3 to 5.1) | 77 | 1.2 (0.9 to 1.4) |
EMD, expected maternal deaths; MMR, maternal mortality ratio; NLB, number of live births; OMD, observed maternal deaths; SMR, standardised mortality ratio.
*Trend χ2.
**χ2 for unequal rates.
Source: INE, in-house.