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Table 4 Birth weight categories and corresponding growth parameters. Weight velocity was calculated from the day birth weight was regained to 36 weeks postmenstrual age

From: Growth of extremely low birth weight infants at a tertiary hospital in a middle-income country

Birth weight

Total number of infants

Infants with good growth (N/%)

Infants with discharge weight > 10th centile (N/%)

Median Gestational age (min - max)

Mean Delta Z-score from birth to 36 weeks (SD)

Mean number of days to regain birth weight (SD)

Mean weight velocity (SD)

600–699

3

0 (0%)

0 (0%)

23 (23–28)

−2.8 (0.7)

10.6 (9.2)

11.6 (2.0)

700–799

13

6 (46.2%)

2 (15.4%)

27 (24–29)

−2.1 (0.9)

14.7 (7.4)

14.0 (3.6)

800–899

35

12 (34.3%)

4 (11.4%)

28 (25–34)

−2.0 (0.8)

19.7 (9.4)

14.0 (3.3)

900–999

41

7 (17%)

5 (12.2%)

28 (23–32)

−2.2 (1.3)

18.5 (11.3)

13.0(2.8)