Table 5.

Comparison of mean response time for questionnaires (in minutes) according to gender and age, NutriNet-Santé Study, France, 2013.^a

Type of questionnaire	Gender					Age
	Female		Male		P	>50 y		≤50 y		P
	Mean	SEM	Mean	SEM		Mean	SEM	Mean	SEM
Sociodemographic	14.0	0.05	13.3	0.09	<.001	14.9	0.06	12.4	0.08	<.001
Anthropometric	10.9	0.05	10.4	0.08	<.001	11.6	0.05	9.6	0.07	<.001
Health	12.1	0.05	12.0	0.09	.40	13.6	0.06	10.5	0.08	<.001
Physical activity	12.2	0.05	11.4	0.08	<.001	12.7	0.06	10.9	0.07	<.001
Dietary intake	22.6	0.08	22.5	0.15	.50	24.5	0.10	20.5	0.13	<.001
Completion time deemed acceptable for a NutriNet-Santé questionnaire	33.9	0.44	31.6	0.77	.004	36.4	0.51	29.2	0.68	<.001

^a Linear regression analyses mutually adjusted for gender, age, education, and level of computer skills. Mean completion time of questionnaires was log-transformed to improve normality.