Prevalence of rheumatic and musculoskeletal diseases (RMDs) in Portugal, overall and stratified by gender
| Total prevalence (95% CI) n=3877 | Women (95% CI) n=2630 | Men (95% CI) n=1247 | |
|---|---|---|---|
| Low back pain (n=1393) | 26.4% (23.3% to 29.5%) | 29.6% (25.8% to 33.5%) | 22.8% (17.9% to 27.8%) |
| Periarticular disease (n=929) | 15.8% (13.5% to 18.0%) | 19.1% (16.2% to 22.0%) | 12.0% (8.4% to 15.6%) |
| Knee osteoarthritis (n=981) | 12.4% (11.0% to 13.8%) | 15.8% (13.7% to 18.0%) | 8.6% (6.9% to 10.3%) |
| Osteoporosis (n=858) | 10.2% (9.00% to 11.3%) | 17.0% (14.7% to 19.2%) | 2.6% (1.9% to 3.4%) |
| Hand osteoarthritis (n=625) | 8.7% (7.5% to 9.9%) | 13.8% (11.6% to 15.9%) | 3.2% (2.2% to 4.1%) |
| Hip osteoarthritis (n=199) | 2.9% (2.3% to 3.6%) | 3.0% (2.3% to 3.7%) | 2.9% (1.7% to 4.1%) |
| Fibromyalgia n=149) | 1.7% (1.3% to 2.1%) | 3.1% (2.4% to 3.9%) | 0.0% (−0.0% to 0.2%) |
| Spondyloarthritis (n=92) | 1.6% (1.2% to 2.1%) | 2.0% (1.3% to 2.7%) | 1.2% (0.7% to 1.8%) |
| Gout (n=92) | 1.3% (1.0% to 1.6%) | 0.1% (−0.0% to 0.2%) | 2.6% (1.9% to 3.3%) |
| Rheumatoid arthritis (n=61) | 0.7% (0.5% to 0.9%) | 1.2% (0.8% to 1.5%) | 0.3% (0.1% to 0.4%) |
| SLE (n=13) | 0.1% (0.1% to 0.2%) | 0.2% (0.1% to 0.4%) | 0.0% (−0.0% to 0.1%) |
| Polymyalgia rheumatica (n=8) | 0.1% (0.0% to 0.2%) | 0.13% (0.0% to 0.2%) | 0.1% (−0.0% to 0.2%) |
The sample was calculated considering a minimum prevalence of 0.5%.18 For rare diseases the estimated number of Portuguese participants with the disease could be overestimated.
RMD, rheumatic and musculoskeletal disease; SLE, systemic lupus erythaematosus.