Body image mediates the depressive effects of weight gain in new mothers, particularly for women already obese: evidence from the Norwegian Mother and Child Cohort Study

Table 1 Summary statistics for the time period between the 17^th Week of pregnancy (time 0) and the 18^th Month Postpartum (time 1)

	Normal weight (18.5 < BMI ≤ 25)				Overweight (25 < BMI ≤ 30)				Obese (30 < BMI)
	Mean	S.D.	Min.	Max.	Mean	S.D.	Min.	Max.	Mean	S.D.	Min.	Max.
Transition to mild or more severe depressive symptoms (1/0)
between time 0 and 1	0.09	0.29	0	1	0.10	0.29	0	1	0.11	0.32	0	1
Time-variant variables at Time 1
BMI change	0.21	0.64	-3.57	8.33	0.11	0.73	-5.73	4.29	-0.10	0.82	-4.09	3.78
Body image concern	1.48	1.15	0	3	2.07	0.95	0	3	2.19	0.86	0	3
Partner	20.56	4.11	0	25	20.44	4.21	0	25	20.22	4.43	0	25
Talk rarely	0.01	0.10	0	1	0.01	0.10	0	1	0.01	0.12	0	1
Talk occasionally	0.22	0.41	0	1	0.20	0.40	0	1	0.17	0.38	0	1
Talk often	0.77	0.42	0	1	0.79	0.41	0	1	0.81	0.39	0	1
Stress	0.98	0.15	0	1	0.97	0.16	0	1	0.96	0.19	0	1
Exercise	2.63	1.37	0	5	2.74	1.38	0	5	2.82	1.39	0	5
Time-invariant variables at Time 0
Health	0.96	1.16	0	10	1.07	1.24	0	8	1.22	1.34	0	10
Higher education	0.72	0.45	0	1	0.64	0.48	0	1	0.53	0.50	0	1
Low income	0.09	0.28	0	1	0.09	0.28	0	1	0.11	0.32	0	1
Mid income	0.75	0.43	0	1	0.80	0.40	0	1	0.81	0.39	0	1
High income	0.16	0.37	0	1	0.12	0.32	0	1	0.07	0.26	0	1
Foreign-born	0.10	0.31	0	1	0.08	0.27	0	1	0.07	0.26	0	1
In the 20s	0.40	0.49	0	1	0.39	0.49	0	1	0.41	0.49	0	1
In the 30s	0.58	0.49	0	1	0.58	0.49	0	1	0.56	0.50	0	1
In the 40s	0.02	0.14	0	1	0.02	0.15	0	1	0.03	0.16	0	1
Twins or triplets	0.02	0.13	0	1	0.02	0.13	0	1	0.02	0.14	0	1
Age	30.60	4.23	18	47	30.75	4.39	18	47	30.59	4.50	18	46
N	27,339				8845				3731

ISSN: 1471-2458