Table 2.
Amalgamated national (Nigeria) tsetse trypanosome infection rates 1960–2017
| Attribute | Number of studies examined/total samples examined | Prevalence (95% CI) (%) | Measure of heterogeneity (Cochran’s Q) | % Variation; I2 (95% CI) | P-value |
|---|---|---|---|---|---|
| National | 14 (12,552) | 17.3 (4.5–36.0) | 6287.77 | 99.8 (99.8–99.9) | P < 0.0001 |
| Northern region | 9 (3107) | 10.5 (5.1–17.5) | 244.70 | 96.7 (95.3–97.7) | P < 0.0001 |
| Southern region | 5 (9445) | 30.4 (0.6–78.6) | 487.95 | 99.9 (99.9–100) | P < 0.0001 |
| G. morsitans | 5 (4883) | 49.7 (30.7–68.8) | 310.55 | 98.7 (98.1–99.1) | P < 0.0001 |
| T. vivax | 5 (4883) | 36.8 (21.9–53.2) | 221.35 | 98.2 (97.2–98.8) | P < 0.0001 |
| T. congolense | 5 (4883) | 5.9 (2.6–10.3) | 52.02 | 92.3 (85.0–96.1) | P < 0.0001 |
| T. brucei | 5 (4883) | 0.2 (0.0–5.2) | 6.60 | 39.4 (0.0–77.6) | P = 0.1586 |
| G. tachinoides | 11 (5793) | 11.5 (6.1–18.5) | 226.36 | 95.1 (93.1–96.6) | P < 0.0001 |
| T. vivax | 10 (5646) | 4.9 (1.0–11.4) | 263.30 | 96.6 (95.1–97.6) | P < 0.0001 |
| T. congolense | 10 (5646) | 2.0 (0.5–4.5) | 85.57 | 89.5 (82.8–93.6) | P < 0.0001 |
| T. brucei | 10 (5646) | 1.2 (0.2–3.2) | 77.30 | 88.4 (80.7–93.0) | P < 0.0001 |
| G. palpalis | 11 (1874) | 4.5 (1.6–8.8) | 118.42 | 91.6 (86.9–94.6) | P < 0.0001 |
| T. vivax | 6 (1610) | 1.6 (0.3–3.9) | 38.80 | 87.1 (74.3–93.6) | P < 0.0001 |
| T. congolense | 5 (1546) | 1.5 (0.0–5.2) | 69.91 | 94.3 (89.5–96.9) | P < 0.0001 |
| T. brucei | 5 (1546) | 1.2 (0.0–5.2) | 87.37 | 95.4 (91.9–97.4) | P < 0.0001 |
Abbreviations: CI confidence interval, I inconsistency or variation