Table 1 Proportion of children who experienced upper extremity pain expressed by number of pain weeks, from a cohort of Danish school children
Number of pain weeks | Study year 1 (44 weeks) | Study year 2 (47 weeks) | Study year 3 (46 weeks) | |||
|---|---|---|---|---|---|---|
n | % (95% CI) | n | % (95% CI) | n | % (95% CI) | |
1 | 108 | 48.7 (41.9–55.4) | 116 | 44.3 (38.2–50.5) | 91 | 40.1 (33.7–46.8) |
2 | 36 | 16.2 (11.6–21.) | 47 | 17.9 (13.5–23.1) | 28 | 12.3 (8.4–17.3) |
3 | 22 | 9.9 (6.3–14.6) | 29 | 11.1 (7.5–15.5) | 32 | 14.1 (9.8–19.3) |
4 | 13 | 5.9 (3.2–9.8) | 21 | 8.0 (5.0–12.0) | 22 | 9.7 (6.2–14.3) |
5 | 11 | 5.0 (2.5–8.7) | 6 | 2.3 (0.8–4.9) | 8 | 3.5 (1.5–6.8) |
6 | 8 | 3.6 (1.6–7.0) | 6 | 2.3 (0.8–3.9) | 8 | 3.5 (1.5–6.8) |
7 | 9 | 4.1 (1.9–7.6) | 9 | 3.4 (1.6–6.4) | 4 | 1.8 (0.5–4.5) |
8–43 | 15 | 6.8 (3.8–10.9) | 28 | 10.7 (7.2–15.1) | 34 | 15.0 (10.6–20.3) |
Totala | 222 | 100.0 | 262 | 100.0 | 227 | 100.0 |
Median | ||||||
(25%–75%)b | 2 (1–4) | 2 (1–4) | 2 (1–4) | |||
Mean (95% CI)b | 2.9 (2.5–3.3) | 3.4 (2.9–3.9) | 4.4 (3.6–5.2) | |||