Comparison of musculoskeletal diagnoses of the 190 matched case-control pairs based on questionnaire or on clinical examination*
| Musculoskeletal diagnoses | Patients | Control subjects | OR | 95% CI | p Value |
|---|---|---|---|---|---|
| *Data presented as pairs from McNemar’s test; †non-calculable. | |||||
| OR, odds ratio; 95% CI, 95% confidence interval. | |||||
| Acute musculoskeletal symptoms | 58 | 15 | 5.12 | 2.78–9.44 | <0.001 |
| Reactive arthritis | 15 | 1 | 16.2 | 2.12 to 123.93 | 0.001 |
| Reactive tendonitis, enthesopathy, or bursitis | 4 | 0 | † | † | 0.125 |
| Postinfective arthralgia or lumbar pain | 23 | 0 | † | † | <0.001 |
| Arthralgia or lumbar pain during infection | 9 | 3 | 3.10 | 0.83 to 11.63 | 0.146 |
| Other acute musculoskeletal symptoms | 7 | 11 | 0.62 | 0.24 to 1.64 | 0.332 |
| Chronic/past musculoskeletal diseases | 11 | 34 | 0.28 | 0.14 to 0.58 | 0.01 |
| Degenerative musculoskeletal disease | 6 | 10 | 0.59 | 0.21 to 1.65 | 0.549 |
| Other chronic symptoms | 5 | 24 | 0.19 | 0.07 to 0.50 | 0.001 |
| Unclassified | 5 | 2 | 2.54 | 0.49 to 13.26 | 0.453 |
| Total number of patients/controls with musculoskeletal symptoms | 74 | 51 | 1.74 | 1.13 to 2.68 | 0.021 |