Table 3.
Subgroup analysis of suicidal ideation and suicidal attempt by study population, sample size, setting, publication year, tool and time frame
| Subgroup | Suicidal ideation | Suicidal attempt | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| No. of studies | Pooled prevalence | 95% CI | I2 | p-value | No. of studies | Pooled prevalence | 95% CI | I2 | p-value | |
| Sample size | ||||||||||
| Small (< median) | 5 | 9 | 2–19 | 98.99% | < 0.001 | 4 | 5 | 1–11 | 91.16% | < 0.001 |
| Large (≥ median) | 7 | 10 | 3–19 | 99.80% | < 0.001 | 6 | 3 | 2–5 | 98.47% | < 0.001 |
| Study setting | ||||||||||
| SNNP | 5 | 14 | 2–32 | 99.78% | < 0.001 | 5 | 5 | 2–8 | 98.74% | < 0.001 |
| Oromia | 2 | 11 | 10–13 | – | – | 2 | 4 | 3–5 | – | – |
| Addis Ababa | 2 | 3 | 2–3 | – | – | 2 | 3 | 2–3 | – | – |
| Harar | 1 | 5 | 4–6 | – | – | 1 | 2 | 1–3 | – | – |
| Tigray | 1 | 5 | 3–8 | – | – | – | – | – | – | – |
| Publication year | ||||||||||
| 1999–2010 | 4 | 19 | 5–39 | 99.89% | < 0.001 | 5 | 5 | 2–8 | 99.86% | < 0.001 |
| 2011–2020 | 8 | 6 | 3–9 | 97.86% | < 0.001 | 5 | 4 | 2–6 | 97.58% | < 0.001 |
| Quality of studies | ||||||||||
| High | 9 | 14 | 6–26 | 99.79% | < 0.001 | 8 | 5 | 3–7 | 96.14% | < 0.001 |
| Low | 3 | 4 | 2–8 | 96.76% | < 0.001 | 2 | 2 | 1–3 | – | – |
| Tool | ||||||||||
| CIDI | 7 | 14 | 4–30 | 99.68% | < 0.001 | 7 | 4 | 1–8 | 97.86% | < 0.001 |
| SRQ-20 | 5 | 4 | 3–6 | 95.54% | < 0.001 | – | – | – | – | – |
| SRB-R | – | – | – | – | – | 1 | 3 | 2–4 | – | – |
| Timeframe | ||||||||||
| 12–month | 12 | 7 | 4 | 1–8 | ||||||
| Lifetime | – | – | – | – | – | 3 | 4 | 3–6 | 97.86% | < 0.001 |
95% CI represents the 95% Confidence Interval for prevalence and I2 true heterogeneity