Table 1.
Meta-regression for case fatality and near-miss events among abortion-related hospital admissions
| Outcome and study group | Number of studies | % with outcome (95% CI) |
Crude OR (95% CI) | P values | Adjusted OR (95% CI)* | P values* |
| Case fatality | Adjusted R2=12.5% | |||||
| Median year of study | ||||||
| 1990–1995 | 10 | 2.6 (0.9–5.1) | 1 | 1 | ||
| 1996–2008 | 33 | 0.9 (0.6–1.4) | 0.41 (0.06 to 2.68) | 0.76 (0.12 to 4.61) | ||
| 2009–2013 | 21 | 3.1 (1.5–5.1) | 1.17 (0.16 to 8.56) | 0.31 | 1.63 (0.25 to 10.79) | 0.56 |
| Type of abortion | ||||||
| All/unspecified abortion | 16 | 0.2 (0–0.5) | 1 | 1 | ||
| Spontaneous+induced | 11 | 0.5 (0.2–1.0) | 1.73 (0.25 to 11.88) | 1.73 (0.25 to 11.88) | ||
| Induced only | 41 | 4.1 (2.5–6.1) | 9.68 (2.27 to 41.27) | 0.005 | 9.68 (2.27 to 41.27) | 0.005 |
| Region | ||||||
| Africa | 39 | 1.8 (1.2–2.6) | 1 | 1 | ||
| Asia | 22 | 2.1 (1.3–3.1) | 1.62 (0.42 to 6.21) | 1.05 (0.27 to 4.05) | ||
| Latin America | 7 | 0 (0–0.5) | 0.08 (0.01 to 0.66) | 0.03 | 0.16 (0.02 to 1.52) | 0.26 |
| Sampling strategy | ||||||
| Facility | 54 | 2.7 (1.9–3.6) | 1 | 1 | ||
| Population | 10 | 0.2 (0.1–0.4) | 0.14 (0.02 to 0.81) | 0.03 | 0.22 (0.03 to 1.83) | 0.16 |
| Near miss | Adjusted R2=23.9% | |||||
| Median year of study | ||||||
| 1990–1995 | 6 | 5.7 (2.2–10.7) | 1 | 1 | ||
| 1996–2008 | 27 | 6.6 (4.3–9.3) | 1.55 (0.56 to 4.31) | 1.16 (0.36 to 3.71) | ||
| 2009–2013 | 14 | 18.3 (9.6–29.1) | 5.09 (1.63 to 15.89) | 0.007 | 2.76 (0.79 to 9.65) | 0.08 |
| Type of abortion | ||||||
| All/unspecified abortion | 10 | 9.4 (3.9–16.8) | 1 | 1 | ||
| Spontaneous+induced | 8 | 4.0 (2.3–6.1) | 0.61 (0.17 to 2.22) | 0.86 (0.25 to 2.94) | ||
| Induced only | 30 | 10.7 (7.5–14.3) | 1.64 (0.61 to 4.42) | 0.17 | 1.73 (0.67 to 4.49) | 0.24 |
| Region | ||||||
| Africa | 25 | 7.9 (5.4–10.8) | 1 | 1 | ||
| Asia | 19 | 12.6 (6.9–19.5) | 1.53 (0.67 to 3.47) | 1.01 (0.47 to 2.14) | ||
| Latin America | 4 | 3.2 (0.4–8.5) | 0.32 (0.08 to 1.39) | 0.11 | 0.18 (0.03 to 1.32) | 0.23 |
| Sampling strategy | ||||||
| Facility | 40 | 10.7 (7.5–14.5) | 1 | 1 | ||
| Population | 8 | 3.2 (2.0–4.5) | 0.35 (0.12 to 0.97) | 0.05 | 0.47 (0.19 to 1.19) | 0.11 |
| Method of calculating near miss | ||||||
| WHO or other near-miss criteria | 3 | 26.6 (9.1–49.0) | 1 | 1 | ||
| Addition of near miss due to complications | 11 | 17.2 (6.6–31.3) | 0.49 (0.10 to 2.48) | 0.65 (0.14 to 3.14) | ||
| Single near-miss criterion | 34 | 5.7 (4.0–7.5) | 0.14 (0.03 to 0.64) | 0.003 | 0.23 (0.05 to 0.99) | 0.02 |
*Case fatality model adjusted for type of abortion. Near-miss events model adjusted for method of calculating near-miss cases and for median year of study.