Table 2.

Participant characteristics (N=189).

		Self-administered version first (n=99)		Supervised version first (n=90)		P b
		n or p50a	% or p25; p75a	n or p50a	% or p25; p75a
Age		55.0	40.0; 65.0	59.0	51.0; 67.0	.02
Gender						.27
	Male	34	34.3	38	42.2
	Female	65	65.7	52	57.8
Education level						.74
	<2 yrs post–high school education	34	34.3	33	36.7
	≥2 yrs post–high school education	65	65.7	57	63.3
Occupational category						.50
	Unemployed	13	13.1	7	7.8
	Employee	8	8.1	10	11.1
	Intermediate profession	12	12.1	8	8.9
	Managerial staffc	38	38.4	32	35.6
	Retired	28	28.3	33	36.7
Self-evaluated Web knowledge d,e						.049
	Web novice	6	6.1	13	14.9
	Web expert	92	93.9	74	85.1
Type of connection d						.94
	<512k	9	9.2	9	10.3
	≥512 and <1024k	18	18.4	16	18.4
	≥1024k	48	49.0	39	44.8
	Do not know	23	23.5	23	26.4

^a Values for age are not n and %, but median and 25^th; 75^thpercentile.

^b P value for the difference between both administration order groups, from Wilcoxon rank-sum nonparametric tests for age and chi-square tests for other variables.

^cOr intellectual profession.

^d185 subjects (98 for the self-administered first and 87 for the supervised version first) returned the satisfaction questionnaire, thereby providing this information.

^eNovice: “inexperienced” or “beginner” level; expert: “advanced” or “expert” level.