Table 5.
Demographics, percentage working, mean symptom duration and symptom course, by cluster (n = 700)
| Cluster | n (%) | Working n (%) | Months with symptoms (mean [SD]) | Symptom course | Female n (%) | Age in years (mean [SD]) | ||
|---|---|---|---|---|---|---|---|---|
| No change n (%) | Worse/worse & more extensive or better but more extensive n (%) | Better n (%) | ||||||
| 1 | 265 (37.9) | 200* (75.5) | 30.3 (25.5) | 14++ (5.3) | 126 (48.1) | 122 (46.6) | 146* (55.1) | 37.3 (8.5) |
| 2 | 178 (25.4) | 103 (57.9) | 40.6+ (38.4) | 11 (6.2) | 123 (69.5) | 43 (24.3) | 123 (69.1) | 37.6 (8.4) |
| 3 | 109 (15.6) | 50* (45.9) | 45.1 (49.6) | 4 (3.7) | 79 (73.8) | 24 (22.4) | 79 (72.5) | 40.0 (8.9) |
| 4 | 32 (4.6) | 18 (56.3) | 60.7+ (45.2) | 1 (3.1) | 25 (78.1) | 6 (18.8) | 24 (75.0) | 37.4 (9.8) |
| 5 | 77 (11.0) | 33* (42.9) | 44.1 (38.7) | 3++ (3.9) | 62 (82.6) | 11 (14.5) | 55 (71.4) | 36.4 (8.3) |
| 6 | 20 (2.9) | 9 (45.0) | 49.6 (46.3) | 1 (5.0) | 13 (65.0) | 6 (30.0) | 17 (85.0) | 35.8 (9.8) |
| 7 | 13 (1.9) | 1* (7.7) | 56.1 (26.9) | 3++ (23.1) | 8 (61.5) | 2 (15.4) | 13* (100.0) | 37.0 (7.8) |
| 8 | 6 (0.9) | 3 (50.0) | 27.8 (20.3) | 1 (16.7) | 5 (83.3) | 0 | 5 (83.3) | 33.1 (9.6) |
| Overall | 700 | 417 (59.6) | 39.1 (37.4) | 38 (5.5) | 441 (63.6) | 214 (30.9) | 462 (66.0) | 37.6 (8.6) |
* Pearson’s chi-square test, P ≤ 0.05, cluster proportion significantly different from overall proportion
+ANOVA with Games–Howell post-hoc test, P ≤ 0.05, significantly different from cluster 1 in multiple comparisons
++Pearson’s chi-square test, P ≤ 0.05, cluster symptom course proportion significantly different from overall proportion