Table 1.
Study cohort and group comparisons.
| Patients with a current MDE | Healthy control subjects | Group comparisons | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| N | % or Median | IQR | N | % or Median | IQR | χ2, df a or U b | P | ||||
| Female (%) | 130 | 53 | 61 | 51 | a | 0.1, 1 | 0.771 | ||||
| Single (%) | 130 | 38 | 61 | 23 | a | 4.1, 1 | 0.043 | ||||
| Married (%) | 130 | 40 | 61 | 33 | a | 0.9, 1 | 0.338 | ||||
| Divorced (%) | 130 | 21 | 60 | 5 | a | 7.7, 1 | 0.006 | ||||
| Age (years) | 130 | 46 | 33 | 54 | 61 | 42 | 32 | 54 | b | 3738 | 0.523 |
| Sum of education years | 115 | 15 | 13 | 17 | 51 | 15 | 13 | 18 | b | 2648 | 0.317 |
| Paid working hours per week | 119 | 24 | 0 | 40 | 51 | 25 | 0 | 40 | b | 3015 | 0.946 |
| Paid working months during the previous year | 120 | 12 | 3 | 12 | 53 | 12 | 1 | 12 | b | 3036 | 0.594 |
| Depression scores | |||||||||||
| BDI-II score at baseline | 130 | 29 | 23 | 34 | 61 | 1 | 0 | 3 | b | 10 | <0.001 |
| BDI-II score at follow-up | 120 | 20 | 14 | 28 | |||||||
| HAMD score at baseline | 130 | 22 | 19 | 25 | 61 | 1 | 0 | 2 | b | 0 | <0.001 |
| HAMD score at follow-up | 120 | 18 | 12 | 21 | |||||||
| Physical activity | |||||||||||
| Total physical activity (min/week) | 127 | 420 | 180 | 1260 | 61 | 870 | 540 | 1680 | b | 2567 | <0.001 |
| Vigorous-intensity activities at work (min/week) | 130 | 0 | 0 | 0 | 61 | 0 | 0 | 0 | b | 3706 | 0.229 |
| Moderate-intensity activities at work (min/week) | 129 | 0 | 0 | 360 | 61 | 0 | 0 | 240 | b | 3878 | 0.853 |
| Time spent walking or bicycling for travel (min/week) | 130 | 60 | 0 | 180 | 61 | 210 | 120 | 315 | b | 2193 | <0.001 |
| Vigorous-intensity activities at leisure (min/week) | 130 | 0 | 0 | 30 | 61 | 120 | 0 | 240 | b | 2180 | <0.001 |
| Moderate-intensity activities at leisure (min/week) | 128 | 60 | 0 | 180 | 61 | 90 | 0 | 210 | b | 3342 | 0.096 |
| Sitting (min/day) | 130 | 480 | 300 | 660 | 61 | 420 | 300 | 600 | b | 3517 | 0.206 |
| Body measures | |||||||||||
| BMI (kg/m2) | 130 | 27 | 23 | 29 | 61 | 24 | 23 | 28 | b | 3335 | 0.077 |
| Body height (cm) | 130 | 172 | 166 | 180 | 61 | 172 | 167 | 183 | b | 3613 | 0.322 |
| Body weight (kg) | 130 | 80 | 67 | 90 | 61 | 73 | 67 | 89 | b | 3717 | 0.486 |
| Waist circumference (cm) | 123 | 91 | 80 | 101 | 57 | 88 | 82 | 95 | b | 3011 | 0.128 |
| Body fat mass (%) | 127 | 32 | 26 | 39 | 59 | 29 | 22 | 36 | b | 3122 | 0.068 |
| Body muscle mass (%) | 127 | 30 | 26 | 33 | 59 | 32 | 27 | 36 | b | 3100 | 0.058 |
| Visceral adipose tissue (%) | 127 | 9 | 6 | 11 | 59 | 7 | 5 | 10 | b | 3117 | 0.064 |
MDE, major depressive episode; IQR, interquartile range; BMI, body mass index. N, total number of individuals with data for these parameters. aχ2 test; bMann-Whitney U test. P < 0.05 in bold print.