Table 1 Descriptive statistics of background variables by classes.
Variable-frequency | Class 1 | Class 2 | Class 3 | Class 4 |
|---|---|---|---|---|
Women–% | 75.8% | 79.6% | 81.2% | 73.8% |
Age–M (years) | 42.9 | 43.1 | 44.2 | 45.8 |
Highest education levela | ||||
Primary | 250 (10.7%) | 534 (16.0%) | 466 (13.7%) | 224 (11.0%) |
Secondary | 1248 (53.6%) | 1988 (59.4%) | 1982 (58.4%) | 1140 (55.9%) |
Tertiary | 829 (35.6%) | 824 (24.6%) | 945 (27.9%) | 675 (33.1%) |
Full-time employment–% | 56.4% | 39.3% | 45.4% | 58.8% |
Visits to a pain clinic in the past yeara | ||||
0–1 times | 310 (13.2%) | 152 (4.5%) | 214 (6.3%) | 292 (14.0%) |
2–3 times | 682 (29.0%) | 568 (16.7%) | 767 (22.4%) | 643 (30.8%) |
≥ 4 times | 1361 (57.8%) | 2688 (78.9%) | 2443 (71.3%) | 1156 (55.3%) |
Pain duration (years)–M (SD) | 8.1 (9.1) | 8.5 (9.2) | 8.6 (9.0) | 8.6 (9.9) |
Social support–M (SD)b | 3.74 (1.38) | 4.18 (1.42) | 4.40 (1.23) | 4.14 (1.28) |
