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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