Table 3 Birth weight Z-score and endpoint outcomes at 36 weeks according to Fenton Growth Chart and Intergrowth 21st Project standard. P values expressing the difference between these charts are shown. Chi squared test used for the variables “small for gestational age” and “weight above 10th centile at 36 weeks”. Student t-test used for the variables “Delta Z-score”, “Birthweight Z-score” and “Weight Z-score at 36 weeks”
From: Growth of extremely low birth weight infants at a tertiary hospital in a middle-income country
Number of infants plotted | Fenton Growth Chart | Intergrowth 21st Project | P value | |
|---|---|---|---|---|
Small for gestational age, n (%) | 89 | 13 (14.6%) | 27 (30.3%) | 0.012 |
Birth weight Z-score, mean (SD) | 89 | −0.45 (1.01) | − 0.72 (1.20) | 0.107 |
Weight Z-score at 36 weeks, mean (SD) | 89 | − 2.50 (1.13) | −2.57 (1.72) | 0.725 |
Delta Z-score, mean (SD) | 89 | −2.05 (0.87) | −1.87 (1.30) | 0.250 |
Weight above 10th centile at 36 weeks, n (%) | 89 | 11 (12.4%) | 20 (22.5%) | 0.075 |