TABLE 1

>Background Variables of Responders and Nonresponders in the Very Preterm Children

VariableRespondersNonrespondersOR95% CI
Maternal age, mean ± SD, y30.7 ± 5.830.2 ± 6.30.9800.960 to 1.010
Maternal smoking during pregnancy (yes), %14241.9301.310 to 2.830
Multiple birth, mean ± SD, No. of children1.3 ± 0.51.4 ± 0.62.1001.530 to 2.820
Female gender, %43531.3601.002 to 1.850
Birth weight, g (OR per increase of 100 g), mean ± SD1249 ± 3821307 ± 4031.0500.997 to 1.110
GA, weeks and days (OR per increase of 1 wk), mean ± SD29Embedded Image ± 2Embedded Image29Embedded Image ± 2Embedded Image1.0700.980 to 1.170
No. of emergency visits at special health care from birth to 5 y, mean ± SD2.4 ± 3.03.1 ± 4.31.0400.991 to 1.090
No. of other visits at special health care from birth to 5 y, mean ± SD20.8 ± 19.922.6 ± 23.01.0030.999 to 1.010
Hospitalized or institutionalized from birth to 5 y, days to 5 y, mean ± SD68.4 ± 39.576.3 ± 69.81.0030.994 to 1.010
None of the studied morbidities, %68650.8500.650 to 1.130
  • OR indicates odds ratio; CI, confidence interval.