Table 1 Characteristics of study participants by gender in the study
Variable categories | Men (N = 391) | Women (N = 547) | All (N = 938) | |||
|---|---|---|---|---|---|---|
n % | n % | n % | ||||
Age (yr.) | ||||||
 60–69 | 233 | (59.6) | 346 | (63.2) | 579 | (61.7) |
 70–79 | 135 | (34.5) | 157 | (28.7) | 292 | (31.1) |
  ≥ 80 | 23 | (5.9) | 44 | (8.1) | 67 | (7.2) |
Education levels (yr.) | ||||||
 0–6 | 45 | (11.5) | 132 | (24.1) | 177 | (18.9) |
 7–9 | 166 | (42.5) | 191 | (34.9) | 357 | (38.1) |
 10–12 | 98 | (25.1) | 120 | (22.0) | 218 | (23.2) |
 13+ | 82 | (20.9) | 104 | (19.0) | 186 | (19.8) |
Individual income | ||||||
 ¥0 to 1999 | 235 | (60.1) | 319 | (58.3) | 554 | (59.1) |
 ¥2000 to 3999 | 88 | (22.5) | 155 | (28.3) | 243 | (25.9) |
 ¥4000 and Over | 68 | (17.4) | 73 | (13.4) | 141 | (15.0) |
Marital status | ||||||
 Married | 354 | (90.5) | 400 | (73.1) | 754 | (80.4) |
 Non-married | 37 | (9.5) | 147 | (26.9) | 184 | (19.6) |
Smoking status | ||||||
 Yes | 120 | (30.7) | 8 | (1.5) | 128 | (13.7) |
 No | 271 | (69.3) | 539 | (98.5) | 810 | (86.3) |
Alcohol use | ||||||
 Yes | 151 | (38.6) | 41 | (7.5) | 192 | (20.5) |
 No | 240 | (61.4) | 506 | (92.5) | 746 | (79.5) |
Regular physical activity | ||||||
 Yes | 136 | (34.8) | 239 | (43.7) | 375 | (40.0) |
 No | 255 | (65.2) | 308 | (56.3) | 563 | (60.0) |
Chronic disease status | ||||||
 Yes | 263 | (67.3) | 365 | (66.7) | 628 | (67.0) |
 No | 128 | (32.7) | 182 | (33.3) | 310 | (33.0) |
Time before falling asleep (min) | ||||||
  ≤ 10 | 124 | (31.7) | 157 | (28.7) | 281 | (30.0) |
 11–29 | 59 | (15.1) | 105 | (19.2) | 164 | (17.5) |
 30–59 | 134 | (34.3) | 171 | (31.3) | 305 | (32.5) |
  ≥ 60 | 74 | (18.9) | 114 | (20.8) | 188 | (20.0) |
Depression score (points) | ||||||
  <  5 | 324 | (82.9) | 421 | (76.9) | 745 | (79.4) |
 5–9 | 54 | (13.8) | 107 | (19.6) | 161 | (17.2) |
  ≥ 10 | 13 | (3.3) | 19 | (3.5) | 32 | (3.4) |