Table 2. Independent risk factors for death among birth asphyxia patients.

		Crude RR (95% CI)	Adjusted RR (95% CI)
Birth location	Inborn	ref	ref
	Outborn	1.7 (1.4–2.2) **	2.1 (1.5–3.1) **
Mode of delivery	Vaginal	ref
	Caesarean	0.9 (0.7–1.1)
Sex	Male	ref
	Female	1.03 (0.8–1.3)
Birth weight (grams)	<2500	1.3 (0.9–1.8)	1.4 (0.8–2.3)
	≥2500	ref	ref
Day of age on admission	Day of birth	ref
	1–2 days	1.01 (0.8–1.3)
	3+ days	0.7 (0.4–1.3)
Temperature (°C) on admission	<36.5	1.4 (1.1–1.9) *	^
	36.5–37.9	ref
	38+	1.8 (1.3–2.7) **
Respiratory rate (bpm) on admission	<30	3.5 (1.9–6.3) **	3.9 (1.9–7.8) **
	30–60	ref	ref
	>60	0.7 (0.5–0.9) **	0.6 (0.4–0.8) *
Oxygen saturation (%) on admission	< 90	2.4 (1.8–3.1) **	2.0 (1.4–2.7) **
	≥ 90	ref	ref
Blood sugar (mmol/L) on admission	<2.6	1.5 (0.97–2.4)	1.4 (0.8–2.6)
	2.6–8.3	ref	ref
	>8.3	2.1 (1.6–2.8) **	1.7 (1.1–2.5) *
Year of admission	2014	ref	ref
	2015	1.4 (0.8–2.5)	1.8 (0.8–4.3)
	2016	1.6 (0.9–2.8)	1.1 (0.5–2.9)
	2017	1.1 (0.6–2.0)	1.1 (0.5–2.6)
	2018	1.9 (1.1–3.2) *	2.0 (0.9–4.5)
	2019	1.9 (1.1–3.2) *	2.0 (0.9–4.4)
	2020	1.9 (1.2–3.2) *	2.4 (1.1–5.1) *
	2021	1.8 (1.1–3.0) *	1.8 (0.8–3.9)

Ref = reference group.

*p<0.05

**p<0.001.

^Given collinearity between temperature and outborn status, temperature was not included in multivariate (Poisson) regression.