Table 1.
Socio-demographic characteristics and health habits of the participants at baseline according to randomization to the melatonin (CRM) or the placebo group, and statistical comparisons between the groups
| CRM group (n = 46) | Placebo group (n = 46) | P | |||
|---|---|---|---|---|---|
| Median | (IQR) [Range] | Median | (IQR) [Range] | ||
| Age (years) | 66.5 | (11) | 65.0 | (10) | 0.959 |
| [55–89] | [56–91] | ||||
| Body mass index (kg m–2) | 27.3 | (3.8) | 26.4 | (6.4) | 0.312 |
| [21.3–41.6] | [18.8–37.1] | ||||
| Doses of alcohol per week (1 dose = 12 g) | 1.3 | (5.5) [0–39.5] | 1.1 | (4) [0–13.3] | 0.602 |
| n | (%) | n | (%) | ||
| Women | 27 | (59) | 34 | (74) | 0.123 |
| Exercise (h) in a week | |||||
| <0.5 h | 5 | (11) | 2 | (4) | 0.106 |
| 0.5–3 h | 38 | (83) | 44 | (96) | |
| ≥3 h | 3 | (6) | 0 | (0) | |
| Smokers | 6 | (13) | 1 | (2) | 0.111 |
| Persons living alone | 13 | (28) | 14 | (30) | 0.819 |
| Education | |||||
| Basic | 22 | (49) | 18 | (39) | 0.607 |
| Professional training | 18 | (40) | 23 | (50) | |
| University or college | 5 | (11) | 5 | (11) | |
| Occupation | |||||
| Retired | 37 | (80) | 36 | (78) | 0.854 |
| Daytime work | 6 | (13) | 8 | (18) | |
| Shift work | 3 | (7) | 2 | (4) | |
| Persons having a driving licence | 39 | (85) | 41 | (89) | 0.536 |
| Duration of regular benzodiazepine use | |||||
| <5 years | 9 | (20) | 5 | (11) | 0.107 |
| 5–10 years | 17 | (37) | 27 | (59) | |
| ≥10 years | 20 | (43) | 14 | (30) | |
| Range of use | 2–26 years | 1.5 months–35 years | |||
IQR, interquartile range; P, Statistical significance of difference between CRM and placebo groups.