Table 4. Multiple linear regression analysis results for child internalizing scores.

4a. Regression coefficients for child internalizing scores in non-ventilated preterms (n = 44)
Predictors	Standardized β	95% Confidence Intervals	p-value
Gestational Age	-0.148	[-3.427, 1.377]	0.393
SNAP-II day 1	0.013	[-0.542, 0.590]	0.932
Postnatal infections	-0.013	[-20.373, 18.603]	0.927
Skin-breaks	0.348	[1.134, 33.120]	0.037
PSI Parenting stress	0.447	[0.057, 0.276]	0.004
Adjusted R-square = 0.283 (p = 0.004)
SNAP-II, score for neonatal acute physiology (severity of illness index); Skin-breaks, number of skin-breaking procedures; PSI, Stress Index-III (parent domain).

4b. Regression coefficients for child internalizing scores in ventilated preterms (n = 57)
Predictors	Standardized β	95% Confidence Intervals	p-value
Gestational Age	0.188	[-1.007, 2.901]	0.334
SNAP-II day 1	0.129	[-0.151, 0.379]	0.391
Postnatal infections	-0.044	[-7.702, 5.817]	0.780
Number of surgery	-0.256	[-7.702, 1.423]	0.173
Ventilation days	-0.312	[-21.921, 7.232]	0.316
Skin-breaks	0.000	[-21.936, 21, 912]	0.999
Morphine exposure	0.728	[7.166, 34.652]	0.004
PSI Parenting stress	0.241	[-0.007, 0.204]	0.066

Adjusted R-square = 0.202 (p = 0.014)

SNAP-II, score for neonatal acute physiology (severity of illness index); Skin-breaks, number of skin-breaking procedures; morphine exposure, daily morphine exposure adjusted daily weight, PSI, Stress Index-III (parent domain).