Frequent Self-Weighing and Visual Feedback for Weight Loss in Overweight Adults

Table 1

Baseline characteristics for total sample and by treatment group.

Baseline characteristics
	Total	Control	CTM intervention	value diff.^a
Age (years)	46.6 ± 9.6^b; (n = 144)^c	48.2 ± 9.9; (n = 66)	45.3 ± 9.6; (n = 77)	0.071
BMI (kg/m^2)	33.5 ± 5.0; (n = 148)	33.7 ± 5.1; (n = 68)	33.4 ± 5.1; (n = 81)	0.898
Body weight (kgs)	93.8 ± 17.4; (n = 148)	93.1 ± 17.9; (n = 68)	94.3 ± 17.0; (n = 81)	0.690
Body weight (lbs)	206.7 ± 38.3; (n = 149)	205.3 ± 39.5; (n = 68)	207.8 ± 37.4; (n = 81)	0.690
Height (in)	65.7 ± 3.7; (n = 142)	65.3 ± 3.7; (n = 65)	66.1 ± 3.7; (n = 77)	0.199
Female^d (, %)	122, 81.9	59, 86.8	63, 77.8	0.156
Education (years), highest level of education completed	15.9 ± 2.2; (n = 146)	16.0 ± 2.2; (n = 67)	15.8 ± 2.2; (n = 79)	0.454
Ethnicity (number of participants)
American Indian	3	2	1	e
Asian	2	2	0
African American	6	3	3
Hispanic	1	1	0
White	144	65	79	0.696
Other	2	0	2

value for the difference between control and experimental group means (independent samples, 2-tailed test or chi-squared 2-tailed test).
^bMean ± standard deviation.
may vary because of different data collection mechanisms (body weight taken in person, age reported via online survey).
^dFor questions with yes/no answers, the percentage that reported “yes” is shown; the value column displays the value of the chi-squared statistics for a two-tailed test.
^eWhen the expected cell count is less than 5, the chi-squared statistics cannot be calculated.