Table 3: Pearson correlations (r) between gestational weight gain, pregravid BMI, disordered eating, sleep, and mood variables.

Correlation n Gest. weight gainPregravid BMINEQ totalRestraint scale itemNo. of overeating episodes past 4 weeksNo. of binge episodes with loss of controlMinutes to fall asleepHours of sleepSleep qualityEPDS total ParitySmoking status

Gestational weight gain1.00
105
Pregravid BMI−0.025
105
1.000
119
NEQ total0.053
96
−0.040
109
1.000
110
Restraint scale item −0.023
83
0.221*  
95
−0.033
89
1.000
95
No. of overeating episodes past 4 weeks0.057
95
−0.021
107
0.184
99
0.085
86
1.000
107
No. of binge episodes with loss of control0.104
96
0.008
108
0.343**  
101
−0.020
86
0.655**  
105
1.000
109
Minutes to fall asleep−0.094
96
−0.038
110
0.252*  
103
−0.013
89
0.244*  
99
0.078
101
1.000
111
Hours of sleep0.055
97
0.114
110
−0.283**  
104
−0.108
88
−0.177
100
−0.086
102
−0.362**  
105
1.000
111
Sleep quality0.099
102
0.068
116
−0.428**  
109
−0.130
94
−0.247*  
106
−0.255**  
108
−0.312**  
110
0.515**  
111
1.000
117
EPDS total 0.039
100
−0.191*  
113
0.523**  
106
−0.010
92
0.255*  
104
0.219*  
105
0.326**  
107
−0.234*  
108
−0.361**  
114
1.000
114
Parity−0.033
103
0.163
115
0.075
106
0.138
92
0.169
103
0.085
105
0.041
107
−0.065
107
−0.167
113
0.119
110
1.000
116
Smoking status−0.098
93
−0.094
105
0.144
97
0.138
85
0.287**  
94
0.167
96
0.069
98
−0.160
98
−0.183
103
0.239*  
100
0.263**  
106
1.000
106

**Correlation is significant at the ≤0.01 level (2 tailed). *Correlation is significant at the ≤0.05 level (2 tailed).
Note: BMI is body mass index, NEQ total is the Night Eating Questionnaire total score, EPDS is the Edinburgh Postnatal Depression Scale. The restraint scale item is from the Eating Inventory. Sleep variables are subscales of the Pittsburgh Sleep Quality Index. Parity is the number of previous live births. Smoking status indicated whether they smoked or not during pregnancy. Higher scores on the NEQ, EPDS, and the subscales of the Pittsburgh Sleep Quality Index indicate more pathology. Higher scores on the restraint scale item indicate a higher cognitive restraint over eating.