Table 1 Demographic, genetic, and clinical characteristics in the entire sample
Participant group | ||||
|---|---|---|---|---|
Characteristics | All (n = 1683) | Controls (n = 1068) | Insomnia (n = 615) | p |
Age, mean (SD), years | 55.8 (6.7) | 55.4 (6.5) | 56.6 (6.8) | < .001 |
Female, no. (%) | 1018 (60.5) | 593 (55.5) | 425 (69.1) | < .001 |
Education, mean (SD), years | 13.6 (3.5) | 13.8 (3.5) | 13.2 (3.5) | .002 |
APOε4 allele status, no. (%) | ||||
Non-carriers | 1108 (65.8) | 703 (65.8) | 405 (65.9) | |
Heterozygotes | 515 (30.6) | 321 (30.1) | 194 (31.5) | .246 |
Homozygotes | 60 (3.6) | 44 (4.1) | 16 (2.6) | |
BMI, mean (SD), kg/m2 | 26.6 (4.2) | 26.5 (4.1) | 26.7 (4.3) | .406 |
Sleep duration, hours (SD) | 7 (0.8) | 7.2 (0.8) | 6.7 (0.9) | < .001 |
GADS (SD) | 0.6 (1.4) | 0.5 (1.1) | 1.0 (1.7) | < .001 |
Physically active, no. (%) | 1057 (62.8) | 674 (63.1) | 383 (62.3) | .734 |
Hypertension, no. (%) | 308 (18.3) | 191 (17.9) | 117 (19.0) | .560 |
Dyslipidemia, no. (%) | 497 (29.5) | 300 (28.1) | 197 (32.0) | .088 |
Diabetes mellitus, no. (%) | 59 (3.5) | 40 (3.8) | 19 (3.1) | .481 |