Table 6.

Admissions and deaths for admission weights <750g

Admission weight (g)	Number (%) of admissions	Number of deaths	Admission weight -specific mortality rate (%) (95% CI)	Odds ratio (95% C.I)	p-value
300–349	6	6	100 (100–100)	0.02 (0.00–0.28)	0.0045
350–399	6	6	100	0.02 (0.00–0.28)	0.0045
400–449	27	27	100	0.02 (0.00–0.28)	0.0045
450–499	3	3	100	0.02 (0.00–0.28)	0.0045
500–549	55	51/53 (*2 missing data)	96.2 (91.1–100)	0.01 (0.00–0.03)	<0.0001
550–599	7	6	85.7 (60.0–100)	0.03 (0.00–0.28)	0.0017
600–649	41	36/38 (*3 missing data)	94.7 (87.6–100)	0.01 (0.00–0.05)	<0.0001
650–699	15	13	86.7 (69.5–100)	0.03 (0.01–0.14)	<0.0001
700–749	77	65/72 (*5 missing data)	90.3 (83.4–97.1)	0.02 (0.01–0.05)	<0.0001
Sub-Total	237 (10 with missing outcome data)	213
≥750	8763	1469	16.8 (16.0–17.5)	Ref
Missing data	213	85
Total	9213	1767	19.2