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Table 3 The odds of having sleeping problems across time when the child has a history of colic, presented as odds ratio (OR) with 95% Confidence Intervals (CI) (significance highlighted in bold)

From: Infant colic, young children’s temperament and sleep in a population based longitudinal cohort study

Variable Frequent night awakenings Number of hours slept
OR 95%CI P-value OR 95%CI P-value
Colic
(ref = no)
1.14 1.09; 1.20 < 0.001 0.78 0.74; 0.81 < 0.001
Gestational age 1.03 1.03; 1.04 < 0.001 0.99 0.99; 1.00 0.007
Gender
(ref = boys)
0.89 0.86; 0.91 < 0.001 1.04 1.01; 1.07 0.007
Mother’s age 1.00 1.00; 1.01 0.064 0.97 0.97; 0.98 < 0.001
Mother’s education 1.20 1.18; 1.21 < 0.001 1.13 1.12; 1.14 < 0.001
Time 3.57 3.48; 3.67 < 0.001 0.54 0.52; 0.54 < 0.001