The Determinants of Survival Time of Premature Neonates at Shambu General Hospital

Table 4

Parameter estimates, standard errors, and the hazard ratios in the final Weibull regression model at Shambu General Hospital from January 2018 to March 2021 (n = 361).

Variables	β̂	SE	Z	Sign	HR	HR (95% CI)
Intercept	3.546	0.226	15.7	0.000	34.754	22.32, 54.12
Residence ref (urban) rural	0.638	0.080	7.978	0.065	1.893	1.618, 2.214
Gestational age ref (≤28)
(28–32) Weeks	−0.277	0.169	−1.638	0.003	0.758	0.544, 1.056
(32–34) Weeks	−0.057	0.103	−0.554	0.002	0.944	0.772, 1.156
(34–37) Weeks	−0.236	0.153	−1.542	0.076	0.790	0.585, 1.066
Sex ref (male) female	−0.195	0.094	−2.071	0.049	0.823	0.685, 0.990
Hb ref (<11) ≥11 g/dl	−0.204	0.073	−2.793	0.005	0.816	0.707, 0.941
Hypertension ref (no) yes	1.302	0.106	12.287	0.005	3.678	2.988, 4.527
HIV status ref (no) yes	1.189	0.104	11.433	0.002	3.284	2.678, 4.026
Antenatal care ref (no) yes	−0.414	0.087	−4.753	0.005	0.661	0.558, 0.784
Mode of delivery ref (C/S) SVD	−0.246	0.094	−2.615	0.009	0.782	0.650, 0.940
Jaundice ref (no) yes	−0.265	0.086	−3.086	0.202	0.767	0.648, 0.908
Hypothermia ref (no) yes	−0.055	0.077	−0.72	0.473	0.946	0.814, 1.101
Sepsis ref (no) yes	0.169	0.08	2.09	0.076	1.184	1.012, 1.385
Multiple pregnancy ref (no) yes	1.470	0.111	13.247	0.001	4.351	3.500, 5.408
PNA ref (no) yes	0.763	0.087	8.772	0.019	2.145	1.809, 2.544
Breast feed 1 hr ref (no) yes	0.032	0.078	0.4	0.686	1.033	0.886, 1.203
Weight ref (≥1,600) <1,600	0.952	0.078	12.201	0.042	2.590	2.223, 3.018
Parity ref (I) II–V	0.985	0.113	8.719	0.169	2.679	2.146, 3.343
>V	0.793	0.145	5.471	0.714	2.211	1.664, 2.937
Gravidity ref (I) II–V	−0.274	0.158	−1.74	0.082	0.760	0.558, 1.036
>V	−0.095	0.096	−0.99	0.322	0.909	0.753, 1.098
Log (scale)	−1.137	0.087	−13.06	0.000	0.321	0.271, 0.381