Table 3

 Stepwise regression analyses of colic and feeding difficulties

Outcome variablePredictor variablesOverall significance of modelR2 valueBeta coefficients
*p<0.05, **p<0.01.
Infant responsivenessStep 1F = 6.63, p < 0.010.14
 Colic−0.38**
Step 2F = 4.06, p = 0.030.19
 Colic−0.20
 Reflux episodes−0.33*
Parenting stressStep 1F = 5.87, p = 0.020.13
 Colic0.37*
Step 2F = 5.68, p < 0.010.25
 Colic0.04
 Feeding discomfort episodes0.48**