Table 8 Estimates of mean, intracluster correlation coefficients (ICC), their respective 95% CI, design effect (Deff), and mean cluster size (n a ) for numeric newborn outcome variables
Variable | Mean | ICC | 95% CI for ICC | Deff | na |
|---|---|---|---|---|---|
Gestational age (weeks) | 34.5 | 0.031 | 0.008-0.055 | 10.4 | 265 |
Birth weight (g) | 2321.1 | 0.033 | 0.009-0.058 | 11.6 | 264 |
Birth weight 2° twin (g) | 1905.2 | 0.007 | <0.001-0.043 | 1.4 | 21 |
APGAR 1st minute | 7.3 | 0.032 | 0.008-0.056 | 8.6 | 261 |
APGAR 1st minute 2° twin | 6.7 | 0.042 | <0.001-0.098 | 2.2 | 21 |
APGAR 5th minute | 8.6 | 0.041 | 0.012-0.070 | 11.5 | 261 |
APGAR 5th minute 2° twin | 8.3 | 0.002 | <0.001-0.034 | 1.1 | 21 |
Head circumference (cm) | 31.7 | 0.031 | 0.008-0.055 | 10.1 | 236 |
Head circumference 2° twin (cm) | 30.8 | 0.018 | <0.001-0.067 | 1.1 | 18 |
Stature (cm) | 44.3 | 0.031 | 0.007-0.054 | 10.3 | 237 |
Stature 2° twin (cm) | 42.3 | 0.025 | <0.001-0.077 | 1.4 | 18 |
Length of ICU stay (days) | 8.4 | 0.088 | 0.028-0.148 | 21.4 | 220 |
Length of hospital stay (days) | 13.3 | 0.037 | 0.009-0.065 | 8.5 | 235 |
Age of newborn at sepsis (days) | 4.6 | 0.173 | 0.054-0.292 | 7.2 | 39 |
Age of newborn at death (days) | 8.9 | 0.088 | <0.001-0.179 | 2.7 | 17 |