Table 1.
Sample characteristics for total group and according to computer and Internet use categories (mean ± SD or %)a
| Total Sample (N = 2650) |
No Internet or computer use (N = 1093) |
Low Internet and computer use (N = 983) |
High Internet and computer use (N= 456) |
P-value | |
| Sex (% female) | 64.0 | 68.7 | 65.4 | 50.1 | < .001 |
| Age (yr) | 44.5 ± 12.3 | 45.8 ± 11.8 | 42.8 ± 12.4 | 44.1 ± 12.7 | < .001 |
| College or university degree (%) | 46.3 | 36.9 | 55.8 | 51.0 | < .001 |
| Employed (%) | 69.2 | 62.9 | 77.0 | 67.6 | < .001 |
| Leisure-time physical activity (hrs/week) | 3.3 ± 4.5 | 3.1 ± 4.7 | 3.6 ± 4.5 | 3.2 ± 4.3 | ns |
| Body Mass Index (kg/m2) | 26.3 ± 6.4 | 25.9 ± 5.9 | 25.9 ± 5.6 | 27.5 ± 8.3 | < .001 |
| Other sedentary behaviours (hrs/week) | 27.6 ± 16.9 | 27.5 ± 18.2 | 25.6 ± 14.3 | 32.2 ± 18.2 | < .001 |
aChi-squared and one-way ANOVA were used to examine differences between categories; ns is not significant.