. Author manuscript; available in PMC: 2021 Dec 13.

Published in final edited form as: Behav Ther. 2014 Sep 18;46(2):257–271. doi: 10.1016/j.beth.2014.09.006

Table 4.

Separate Generalized Estimating Equations Analyses Using a Gamma Distribution of the Lagged Effects of Body-, Eating-, and Exercise-Related Social Comparison and Body Surveillance on Body Dissatisfaction Controlling for Negative Affect

For the model involving the predictor variable of body-related social comparison:
Parameter Estimates	B	SE	Wald χ²	df	p
Outcome variable: body dissatisfaction, N_{Level 1} = 8742, N_{Level 2} = 232
Intercept	2.74	.17	277.97	1	<.001
Lagged Body-related Social Comparison (person-mean centered)	.002	.001	10.96	1	.001
Body-related Social Comparison (person means)	.04	.003	142.66	1	<.001
Time	.001	.0001	22.41	1	<.001
Negative Affect (person-mean centered)	.004	.01	.67	1	.414
Negative Affect (person means)	−.02	.02	1.52	1	.218
(Scale)	.91
Pseudo-R² = .183
For the model involving the predictor variable of eating-related social comparison:
Parameter Estimates	B	SE	Wald χ²	df	p
Outcome variable: body dissatisfaction, N_{Level 1} = 8742, N_{Level 2} = 232
Intercept	3.11	.17	357.06	1	<.001
Lagged Eating-related Social Comparison (person-mean centered)	.002	.001	16.32	1	<.001
Eating-related Social Comparison (person means)	.03	.003	106.28	1	<.001
Time	.001	.0001	18.17	1	<.001
Negative Affect (person-mean centered)	.004	.01	.99	1	.319
Negative Affect (person means)	−.02	.02	1.34	1	.248
(Scale)	1.00
Pseudo-R² = .120
For the model involving the predictor variable of exercise-related social comparison:
Parameter Estimates	B	SE	Wald χ²	df	p
Outcome variable: body dissatisfaction, N_{Level 1} = 8742, N_{Level 2} = 232
Intercept	2.99	.18	288.26	1	<.001
Lagged Exercise-related Social Comparison (person-mean centered)	.001	.001	4.65	1	.031
Exercise-related Social Comparison (person means)	.03	.003	88.33	1	<.001
Time	.001	.0001	18.82	1	<.001
Negative Affect (person-mean centered)	.01	.01	.96	1	.326
Negative Affect (person means)	.01	.02	.10	1	.748
(Scale)	.81
Pseudo-R² = .093
For the model involving the predictor variable of body surveillance:
Parameter Estimates	B	SE	Wald χ²	df	p
Outcome variable: body dissatisfaction, N_{Level 1} = 8742, N_{Level 2} = 232
Intercept	1.39	.24	34.74	1	<.001
Lagged Body Surveillance (person-mean centered)	.03	.01	6.41	1	.011
Body Surveillance (person means)	.42	.04	89.19	1	<.001
Time	.001	.0001	23.89	1	<.001
Negative Affect (person-mean centered)	.01	.004	1.45	1	.229
Negative Affect (person means)	.03	.02	3.55	1	.060
(Scale)	.78
Pseudo-R² = .123