Table 3 Multivariate multilevel multinomial regression of child-level factors associated with age-specific under-five mortality, 2016/217 Nigeria MICS
|  | Model 0 | Model 1 (child-level factors) Ref: alive (N = 30,957) | ||
|---|---|---|---|---|
Intercept-only RRR (95%CI) | Neonatal mortality (0–27 days) RRR (95%CI) | Post-neonatal mortality (28 days-11 months) RRR (95%CI) | Child mortality (12 months to 11 months) RRR (95%CI) | |
Fixed effects | ||||
 Child’s sex | ||||
  Male |  | Ref. | Ref. | Ref. |
  Female |  | 0.72 (0.61–0.85)*** | 0.84 (0.71–0.98)* | 1.04 (0.85–1.27) |
 Gestation type | ||||
  Singleton |  | Ref. | Ref. | Ref. |
  Multiple |  | 5.64 (4.25–7.49)*** | 2.76 (2.03–3.75)*** | 1.68 (1.09–2.58)* |
 Birth order | ||||
  First |  | Ref. | Ref. | Ref. |
  2–3 |  | 1.14 (0.58–2.25) | 0.47 (0.10–2.17) | 0.67 (0.13–3.49) |
  4–6 |  | 1.38 (0.68–2.80) | 0.59 (0.13–2.74) | 1.02 (0.19–5.43) |
  ≥ 7 |  | 2.83 (1.37–5.84)** | 0.88 (0.19–4.13) | 1.44 (0.26–7.88) |
 Previous birth interval | ||||
  < 2 years |  | Ref. | Ref. | Ref. |
  First birth |  | 0.99 (0.49–2.00) | 0.35 (0.08–1.66) | 0.41 (0.08–2.10) |
  ≥ 2 years |  | 0.37 (0.31–0.44)*** | 0.47 (0.39–0.57)*** | 0.52 (0.43–0.63)*** |
 Maternal age at birth | ||||
  < 20 years |  | Ref. | Ref. | Ref. |
  20–34 years |  | 0.59 (0.45–0.76)*** | 0.71(0.54–0.93)* | 0.54 (0.40–0.71)*** |
  ≥ 35 years |  | 0.55 (0.39–0.78)*** | 0.64 (0.44–0.95)* | 0.55 (0.38–0.80)** |
Random effects (community-level) | ||||
 Variance (SE) | 0.49 (0.05) | 0.42 (0.05) | ||
 95%CI | 0.41,0.60 | 0.34,0.53 | ||
 PCV | Ref. | 14.3% | ||
 MOR | 1.95 | 1.85 | ||