Table 2.
Multinomial logistic regression results; outcome: pain pattern subgroup*
| Factor | Subgroup | OR | 95% CI | p Value |
|---|---|---|---|---|
| Age (years) | ||||
| Back extension | 1.02 | 1.01 to 1.03 | 0.002 | |
| Constant leg | 1.00 | 0.99 to 1.02 | 0.626 | |
| Intermittent leg | 1.06 | 1.04 to 1.08 | <0.001 | |
| Sex | ||||
| Male (Ref: female) | Back extension | 0.90 | 0.64 to 1.27 | 0.551 |
| Constant leg | 1.64 | 1.10 to 2.46 | 0.017 | |
| Intermittent leg | 1.87 | 1.11 to 3.15 | 0.018 | |
| Body mass index | ||||
| Overweight/obese (Ref: normal) | Back extension | 1.19 | 0.84 to 1.68 | 0.322 |
| Constant leg | 1.74 | 1.13 to 2.68 | 0.012 | |
| Intermittent leg | 1.91 | 1.06 to 3.42 | 0.031 | |
| Number of chronic conditions† | ||||
| Back extension | 1.14 | 1.00 to 1.30 | 0.045 | |
| Constant leg | 0.93 | 0.78 to 1.10 | 0.400 | |
| Intermittent leg | 1.13 | 0.95 to 1.34 | 0.186 | |
| EuroQol-5D summary score | ||||
| Back extension | 1.86 | 0.86 to 4.00 | 0.113 | |
| Constant leg | 0.40 | 0.18 to 0.93 | 0.033 | |
| Intermittent leg | 0.56 | 0.18 to 1.69 | 0.301 | |
*‘Back flexion’ is referent group.
†Comorbidity count developed based on those conditions with at least 5% prevalence in the sample (high cholesterol, high blood pressure, diabetes, depression, osteoarthritis, and asthma/chronic obstructive pulmonary disease).