Table 1:
Characteristics of the Stirling County Study samples enrolled in 1952, 1970 and 1992 (n = 3410)
| Characteristic | Participants enrolled in 1952 | Participants enrolled in 1970 | Participants enrolled in 1992 | ||||||
|---|---|---|---|---|---|---|---|---|---|
|
|
|
|
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| All n = 1003 |
Women n = 547 |
Men n = 456 |
All n = 1203 |
Women n = 605 |
Men n = 598 |
All n = 1402 |
Women n = 761 |
Men n = 641 |
|
| No. of deaths through 2011 (% of sample) | 925 (92.2) | 489 (89.4) | 436 (95.6) | 854 (71.0) | 394 (65.1) | 460 (76.9) | 444 (31.7) | 226 (29.7) | 218 (34.0) |
|
| |||||||||
| Age at enrolment, mean ± SD | 49.7 ± 16.5 | 48.9 ± 17.1 | 50.7 ± 15.7 | 49.1 ± 17.5 | 48.6 ± 18.1 | 49.7 ± 16.8 | 49.6 ± 17.3 | 50.0 ± 17.7 | 49.2 ± 16.7 |
|
| |||||||||
| Current depression status, no. (%) | |||||||||
|
| |||||||||
| Current depression | 60 (6.0) | 36 (6.6) | 24 (5.3) | 70 (5.8) | 35 (5.8) | 35 (5.9) | 91 (6.5) | 60 (7.9) | 31 (4.8) |
|
| |||||||||
| No depression | 943 (94.0) | 511 (93.4) | 432 (94.7) | 1133 (94.2) | 570 (94.2) | 563 (94.2) | 1311 (93.5) | 701 (92.1) | 610 (95.2) |
|
| |||||||||
| Mortality rate per 1000 person-years among participants with and without current depression | |||||||||
|
| |||||||||
| Current depression | 38.1 | 29.8 | 61.6 | 32.7 | 27.7 | 39.5 | 28.6 | 23.9 | 39.4 |
|
| |||||||||
| No depression | 29.2 | 25.9 | 35.2 | 25.2 | 21.3 | 29.8 | 19.2 | 17.8 | 20.9 |
|
| |||||||||
| Education, no. (%) | |||||||||
|
| |||||||||
| < Grade 5 | 170 (17.0) | 63 (11.5) | 107 (23.5) | 111 (9.2) | 36 (6.0) | 75 (12.5) | 47 (3.4) n = 1400 |
11 (1.5) | 36 (5.6) n = 639 |
|
| |||||||||
| Grade 5–10 | 655 (65.3) | 360 (65.8) | 295 (64.7) | 835 (69.4) | 408 (67.4) | 427 (71.4) | 703 (50.2) n = 1400 |
357 (46.9) | 346 (54.2) n = 639 |
|
| |||||||||
| ≥ Grade 11 | 178 (17.8) | 124 (22.7) | 54 (11.8) | 257 (21.4) | 161 (26.6) | 96 (16.1) | 650 (46.4) n = 1400 |
393 (51.6) | 257 (40.2) n = 639 |
|
| |||||||||
| Cigarettes smoked per day, no. (%) | |||||||||
|
| |||||||||
| None | 505 (50.4) | 412 (75.3) | 93 (20.4) | 577 (48.0) | 399 (66.0) | 178 (29.8) | 921 (66.5) n = 1385 |
546 (72.4) n = 754 |
375 (59.4) n = 631 |
|
| |||||||||
| > 20 | 103 (10.3) | 8 (1.5) | 95 (20.8) | 147 (12.2) | 24 (4.0) | 123 (20.6) | 226 (16.3) n = 1385 |
86 (11.4) n = 754 |
140 (22.2) n = 631 |
|
| |||||||||
| < 20 | 395 (39.4) | 127 (23.2) | 268 (58.8) | 479 (39.8) | 182 (30.1) | 297 (49.7) | 238 (17.2) n = 1385 |
122 (16.2) n = 754 |
116 (18.4) n = 631 |
|
| |||||||||
| Alcohol abuse, no. (%) | 39 (4.1) n = 953 |
3 (0.6) n = 523 |
36 (8.4) n = 430 |
69 (6.4) n = 1080 |
8 (1.5) n = 551 |
61 (11.5) n = 529 |
97 (7.0) n = 1395 |
16 (2.1) n = 757 |
81 (12.7) n = 638 |
|
| |||||||||
| Obesity, no. (%) | 68 (7.1) n = 953 |
51 (9.8) n = 523 |
17 (4.0) n = 430 |
149 (12.4) n = 1201 |
92 (15.2) n = 604 |
57 (9.6) n = 597 |
314 (22.5) n = 1396 |
176 (23.2) n = 758 |
138 (21.6) n = 638 |
Note: SD = standard deviation.