Table 1 Demographic comparison between 2009, 2014, and 2018 groups after weighing (n = 3548)
| Â | 2009 | 2014 | 2018 | Between-group differences | |
|---|---|---|---|---|---|
n = 1016 | n = 1018 | n = 1514 | Test statistic | p | |
Gender (n, %) | χ2 = 1.11 | 0.574 | |||
 Male | 471 (46.4) | 462 (45.4) | 719 (47.5) |  | |
 Female | 545 (53.6) | 556 (54.6) | 795 (52.5) | ||
 Age, Mean (SD) | 45.18 (16.28) | 45.84 (17.04) | 48.98 (18.15) | F = 42.81 |  < .01 |
Age group (n, %)* | χ2 = 44.35 |  < .01 | |||
 18 – 29 | 197 (20.4) | 180 (17.7) | 248 (18.3) |  | |
 30 – 39 | 183 (18.9) | 154 (15.1) | 217 (16.0) | ||
 40 – 49 | 206 (21.3) | 155 (15.3) | 233 (17.2) | ||
 50 – 59 | 178 (18.4) | 179 (17.6) | 217 (16.0) | ||
 60 and above | 204 (21.1) | 223 (34.3) | 440 (32.5) | ||
Education (n, %)* | χ2 = 16.94 |  < .01 | |||
 Primary or below | 240 (23.6) | 240 (23.6) | 300 (19.8) |  | |
 Secondary | 487 (48.1) | 489 (48.1) | 716 (47.3) | ||
 Tertiary and above | 286 (28.2) | 287 (28.2) | 496 (32.7) | ||
Employment status* | χ2 = 13.857 |  < .01 | |||
 Employed | 648 (64.0) | 613 (60.5) | 1010 (66.8) |  | |
 Unemployed | 45 (4.4) | 37 (25.2) | 65 (4.3) | ||
 Retired / Homemakers | 319 (31.5) | 363 (32.4) | 437 (28.9) | ||
Q81 (n, %)* | χ2 = 19.649 |  < .01 | |||
 Yes | 874 (86.2) | 902 (89.1) | 1211 (82.8) |  | |
 No | 140 (13.8) | 110 (10.9) | 251 (17.2) | ||
LPDDS, Mean (SD) | 2.63 (0.49) | 2.67 (0.47) | 2.65 (0.32) | F = 1.875 | .154 |