From: Predictors of fibromyalgia: a population-based twin cohort study
Univariate analysesa | Multivariate analyses | ||
---|---|---|---|
OR (95 % CI) for LC3 | OR (95 % CI) for LC3 1975 variable data | OR (95 % CI) for LC3 1981 variable data | |
n = 374 “cases”/ 5894 persons | n = 353 “cases” | n = 346 “cases” | |
headache frequency 1981 | not assessed | ||
many /week | 11.33 (6.63–19.35) | 6.79 (3.73–12.37) | |
1–4 /month | 2.66 (1.91–3.69) | 2.06 (1.44–2.94) | |
some/year | 1.78 (1.31–2.41) | 1.53 (1.11–2.13) | |
never | 1.00 (reference category) | 1.00 | |
back pain (yes/no) | |||
both 1975 and 1981 | 6.33 (4.55–8.81) | 5.20 (3.67–7.38) | 4.67 (3.28–6.67) |
either 1975 or 1981 | 2.28 (1.77–2.94) | 1.97 (1.51–2.59) | 1.85 (1.41–2.44) |
never | 1.00 (reference category) | 1.00 | 1.00 |
shoulder pain (yes/no) | |||
both 1975 and 1981 | 4.65 (2.41–8.97) | 2.10 (1.02–4.34) | 1.89 (0.89–4.02) |
either 1975 or 1981 | 2.38 (1.77–3.19) | 1.56 (1.12–2.16) | 1.51 (1.08–2.12) |
never | 1.00 (reference category) | 1.00 | 1.00 |
neck pain (yes/no) | |||
both 1975 and 1981 | 5.78 (3.42–9.75) | 3.80 (2.11–6.83) | 3.32 (1.83–6.02) |
either 1975 or 1981 | 2.23 (1.66–2.99) | 1.69 (1.22–2.33) | 1.51 (1.09–2.09) |
never | 1.00 (reference category) | 1.00 | 1.00 |