Table 1.

Patient-initiated e-SBI: baseline characteristics of nonparticipants, nonresponders, and responders

		Nonparticipants	P Value, Nonparticipants vs Nonresponders	Nonresponders	P Value, Nonresponders vs Responders	Responders	P Value, Nonparticipants vs Responders
Gender, n (%) (P = .09)
	Men	716 (51)		35 (44)		55 (43)
	Women	678 (49)		44 (56)		74 (57)
	Total	1394 (100)	.25	79 (100)	.89	129 (100)	.07
Age, n (%) (P < .001)
	18-20	125 (9)		10 (13)		3 (2)
	21-30	233 (17)		19 (24)		18 (14)
	31-40	360 (26)		23 (29)		22 (17)
	41-50	237 (17)		6 (8)		12 (9)
	51-60	216 (16)		10 (13)		31 (24)
	≥ 61	211 (15)		11 (14)		42 (33)
	Total	1382 (100)	.15	79 (100)	< .001	128 (100)	< .001
Physical activity score
	Mean (95% CI)	1.9 (1.8-2.0)		1.8 (1.5-2.2)		2.1 (1.8-2.3)
	Median (IQR)	2 (0-3)		2 (0-3)		2 (1-3)