Women | With symptom-related arthritis (n = 1220) | |||||
China n = 201 | Ghana n = 290 | India n = 238 | Mexico n = 29 | Russian Federation n = 358 | South Africa n = 104 | |
Age (years) | ||||||
 18–29 | − | − | 0.9% (0.4%–1.8%) | − | − | − |
 30–39 | − | 1.6% (0.4%–6.6%) | 1.5% (0.7%–3.2%) | − | 12.5% (4.4%–30.7%) | 0.2% (0.0%–1.7%) |
 40–49 | 0.3% (0.1%–1.3%) | 3.3% (1.3%–7.9%) | 2.8% (1.7%–4.4%) | 1.2% (0.2%–8.0%) | 2.3% (0.5%–9.5%) | 2.4% (0.3%–15.7%) |
 50–59 | 4.1% (3.0%–5.7%) | 11.5% (8.6%–15.2%) | 5.9% (43%–8.0%) | 0.7% (0.1%–4.1%) | 4.3% (2.6%–7.1%) | 6.2% (3.7%–10.2%) |
 60–69 | 4.0% (2.8%–5.8%) | 16.5% (12.3%–21.9%) | 5.6% (4.0%–7.9%) | 1.5% (0.7%–3.2%) | 10.0% (7.0%–14.2%) | 5.5% (3.0%–9.8%) |
 70+ | 5.6% (3.9%–7.9%) | 18.6% (14.9%–23.0%) | 6.7% (4.7%–9.7%) | 2.1% (0.9%–4.7%) | 20.1% (14.4%–27.4%) | 5.6% (3.3%–9.2%) |
Formal educationa | ||||||
 Never schooled | 4.1% (3.3%–5.1%) | 9.4% (6.9%–12.7%) | 3.7% (2.9%–4.7%) | 1.5% (0.5%–4.1%) | 41.8% (16.6%–72.2%) | 3.5% (1.7%–6.9%) |
  ≤ Primary school | 2.0% (1.3%–3.1%) | 2.2% (1.4%–3.6%) | 2.2% (1.5%–3.4%) | 1.0% (0.3%–3.3%) | 22.6% (14.3%–33.7%) | 5.9% (2.3%–14.3%) |
 Secondary school | 0.5% (0.3%–0.8%) | 3.0% (1.3%–6.5%) | 1.2% (0.6%–2.5%) | 0.0% (0.0%–0.3%) | 8.9% (4.9%–15.4%) | 1.0% (0.4%–2.6%) |
 College | 0.0% (0.0%–0.2%) | − | 1.1% (0.2%–6.4%) | 0.0% (0.0%–0.3%) | 4.3% (2.4%–7.5%) | 0.3% (0.1%–1.2%) |
Marital statusb | ||||||
 Never married | − | 1.9% (0.4%–9.0%) | 1.1% (0.3%–3.7%) | 0.3% (0.1%–0.9%) | 1.7% (0.7%–4.2%) | 2.6% (0.6%–11.2%) |
 Married | 1.1% (0.9%–1.4%) | 2.6% (1.7%–4.1%) | 2.5% (1.9%–3.2%) | 0.7% (0.2%–2.4%) | 3.1% (1.9%–4.9%) | 1.3% (0.6%–2.9%) |
 Divorced/widowed | 4.2% (2.2%–7.9%) | 10.8% (7.7%–15.0%) | 4.8% (3.5%–6.7%) | 0.6% (0.3%–1.4%) | 18.0% (9.9%–30.5%) | 3.4% (2.0%–5.6%) |
Men | With symptom-based arthritis (n = 594) | |||||
China n = 138 | Ghana n = 170 | India n = 113 | Mexico n = 15 | Russian Federation n = 117 | South Africa n = 41 | |
Age strata (years) | ||||||
 18–29 | − | 1.0% (0.1%–7.2%) | 0.8% (0.1%–4.5%) | − | 2.3% (0.3%–16.2%) | − |
 30–39 | − | 1.7% (0.5%–5.4%) | 0.8% (0.2%–3.8%) | − | 5.2% (1.0%–22.2%) | − |
 40–49 | 0.8% (0.2%–2.8%) | 0.6% (0.1%–2.5%) | 1.9% (0.8%–43%) | − | 1.9% (0.2%–13.4%) | 1.7% (0.4%–6.6%) |
 50–59 | 2.3% (1.6%–3.1%) | 3.8% (2.7%–5.4%) | 2.6% (1.1%–6.2%) | − | 1.9% (0.9%–4.1%) | 2.3% (1.0%–4.9%) |
 60–69 | 3.8% (3.3%–4.4%) | 9.1% (6.7%–12.2%) | 3.5% (2.0%–6.1%) | 0.6% (0.2%–2.2%) | 6.4% (3.3%–12.0%) | 3.7% (1.8%–7.5%) |
 70+ | 4.3% (3.5%–5.2%) | 9.2% (6.9%–12.3%) | 4.8% (3.0%–7.5%) | 3.0% (1.5%–5.9%) | 10.7% (6.9%–16.4%) | 6.0% (2.4%–14.3%) |
Formal educationa | ||||||
 None | 4.8% (3.3%–6.8%) | 5.6% (4.0%–7.7%) | 2.7% (1.3%–5.5%) | 1.5% (0.5%–3.8%) | 3.4% (0.3%–27.7%) | 4.2% (1.5%–10.8%) |
  ≤ Primary school | 1.2% (1.0%–1.6%) | 1.9% (1.1%–3.2%) | 1.2% (0.7%–1.9%) | 0.2% (0.1%–0.6%) | 10.4% (5.0%–20.4%) | 1.6% (0.8%–3.4%) |
 Secondary school | 1.0% (0.4%–2.3%) | 1.4% (0.6%–3.1%) | 2.0% (1.0%–4.2%) | 0.1% (0.0%–0.5%) | 3.9% (1.7%–9.0%) | 0.9% (0.2%–5.4%) |
 College | 0.1% (0.0%–0.4%) | 0.7% (0.2%–2.2%) | 0.4% (0.1%–1.6%) | 0.2% (0.0%–1.4%) | 1.4% (0.4%–5.3%) | − |
Marital statusb | ||||||
 Never married | 0.9% (0.2%–5.0%) | 1.5% (0.2%–8.8%) | 1.6% (0.3%–8.2%) | − | 0.2% (0.0%–0.9%) | 0.8% (0.2%–2.8%) |
 Married | 1.1% (0.6%–1.8%) | 2.5% (1.8%–3.4%) | 1.8% (1.1%–2.7%) | 0.3% (0.1%–0.5%) | 3.7% (1.7%–8.0%) | 1.4% (0.6%–3.2%) |
 Divorced/widowed | 2.9% (1.7%–4.9%) | 6.5% (3.8%–10.9%) | 1.9% (0.6%–5.5%) | 0.6% (0.1%–2.6%) | 7.9% (2.9%–19.6%) | 2.9% (0.7%–11.4%) |