Table 2.

Unadjusted linear regressions of percentage of bodyweight lost among women and men who used the Lose It! mobile app (sex-specific intercepts for models are not reported; N=7007). Estimates in italics are significant at P<.05. BMI: body mass index. Ref: reference category.

Characteristics		Women			Men
		Regression coefficient	Standard error	P value	Regression coefficient	Standard error	P value
Age (years)a
	18-24	Ref			Ref
	25-34	.75	0.25	.003	.41	0.41	.32
	35-44	.65	0.25	.009	.20	0.40	.62
	45-54	1.04	0.25	<.001	−.05	0.41	.91
	55-64	.85	0.28	.003	.04	0.43	.93
	65-80	−.03	0.37	.93	−1.03	0.51	.05
BMI classificationa,b
	Overweight	Ref			Ref
	Obesity I	.34	0.17	.05	1.27	0.24	<.001
	Obesity II	.84	0.22	<.001	1.16	0.32	<.001
	Extreme obesity	.82	0.24	.001	1.49	0.36	<.001
Weight loss plan (lb/week)a
	<1	Ref			Ref
	1 to <1.5	1.11	0.42	.008	.12	0.56	.82
	1.5 to <2	1.36	0.42	.001	.51	0.56	.36
	2 to <4	2.33	0.41	<.001	2.04	0.54	<.001
Daily calories on Mondays versus weekend daysa
	More than 500 calories on weekend days	Ref			Ref
	More than 250 to 500 calories on weekend days	.39	0.58	.50	−.52	0.49	.28
	More than 50 to 250 calories on weekend days	1.64	0.54	<.001	.17	0.45	.71
	More than or less than 50 calories	1.83	0.54	<.001	.11	0.48	.82
	More than 50 to 250 calories on Mondays	.50	0.54	.36	−1.17	0.48	.01
	More than 250 to 500 calories on Mondays	−1.38	0.63	0.03	−2.52	0.60	<.001
	More than 500 calories on Mondays	−3.45	0.94	<.001	−3.37	0.95	<.001

^aFactor significantly associated (P<.001) with percentage of weight loss for that sex.

^bJoint test comparing matching coefficients for women and men for a given factor is statistically significant (P<.001).