Table 4.
Multivariable conditional logistic regression analysis for RA risk (A) and logistic regression analyses after stratifying for BMI (B and C) in the Medical Biobank of Northern Sweden cohort.
| Characteristic | OR | 95% CI | p-Value |
|---|---|---|---|
| A. | |||
| Adiponectin, per 1000 ng/mL | 1.05 | 0.98–1.13 | 0.19 |
| Leptin, per 10 ng/mL | 1.01 | 0.99–1.03 | 0.56 |
| Resistin, per 10 ng/mL | 0.75 | 0.85–1.12 | 0.75 |
| Smoking, yes/no | 2.27 | 1.12–4.62 | 0.02 |
| B. BMI ≤ 25 kg/m2 | |||
| Adiponectin, per 1000 ng/mL | 1.02 | 0.94–1.11 | 0.64 |
| Leptin, per 10 ng/mL | 1.00 | 0.93–1.07 | 0.92 |
| Resistin, per 10 ng/mL | 1.05 | 0.85–1.29 | 0.68 |
| Women, yes/no | 1.42 | 0.25–8.03 | 0.69 |
| Age, per 1 year | 0.99 | 0.94–1.05 | 0.79 |
| Smoking, yes/no | 2.04 | 0.72–5.81 | 0.18 |
| C. BMI > 25 kg/m2 | |||
| Adiponectin, per 1000 ng/mL | 1.17 | 1.01–1.36 | 0.03 |
| Leptin, per 10 ng/mL | 1.00 | 0.98–1.03 | 0.94 |
| Resistin, per 10 ng/mL | 0.98 | 0.87–1.09 | 0.69 |
| Women, yes/no | 0.84 | 0.25–2.78 | 0.77 |
| Age, per 1 year | 1.00 | 0.97–1.05 | 0.70 |
| Smoking, yes/no | 1.63 | 0.71–3.72 | 0.25 |
Abbreviations: OR: odds ratio; CI: confidence interval; BMI: body mass index.