Table 1.

Demographics and baseline characteristics by treatment groups.

Variable	Attention control (n=24)	Reinforcement (n=21)	Statistic (df)	p value
Female gender, % (n)	91.7 (22)	76.2 (16)	χ2 (1) = 2.04	.15
Hispanic ethnicity, % (n)	0.0 (0)	4.8 (1)	χ2 (1) = 1.17	.28
Race, % (n)			χ2 (2) = 3.67	.16
African American	0.0 (0)	9.5 (2)
Caucasian	100.0 (24)	85.7 (18)
Other	0.0 (0)	4.8 (1)
Taking anit-hypertensive medication, % (n)	66.7 (16)	57.1 (12)	χ2 (2) = 0.43	.51
Age	63.2 ± 6.6	63.2 ± 5.3	t (43) = .01	.99
Years of education	15.8 ± 2.4	14.8 ± 2.4	t (43) = 1.43	.16
Household income†	60,000 ± 63,000	82,000 ± 68,000	t (43) = −0.87	.39
Systolic blood pressure	128.8 ± 11.7	131.9 ± 10.6	t (43) = −0.96	.34
Diastolic blood pressure	80.9 ± 6.5	85.9 ± 7.5	t (43) = −2.39	.02
Weight, pounds	182.7 ± 38.3	203.2 ± 50.8	t (43) = −1.54	.16
Waist circumference	99.5 ± 13.9	106.4 ± 20.5	t (43) = −1.34	.19
Walked less than 4000 steps per day in baseline week	37.5 (9)	57.1 (12)	χ2 (2) = 1.74	.18

Values are means (standard deviation) unless otherwise specified.

^†= median ± interquartile range; data were log transformed prior to analyses.