Table 2.
Rate ratios (RRs) with 95% confidence intervals (95% CI) of any fracture by SCD activity index at baseline at 50 years
| Category | n fractures | Univariate analysis | Multivariable* analysis | ||
|---|---|---|---|---|---|
| RR | 95% CI | RR | 95% CI | ||
| Quintile 1 | 83 | 1.0 | Ref | 1.0 | Ref |
| Quintile 2 | 84 | 1.03 | 0.76–1.40 | 1.04 | 0.77–1.41 |
| Quintile 3 | 77 | 1.05 | 0.77–1.43 | 1.09 | 0.80–1.50 |
| Quintile 4 | 73 | 1.08 | 0.79–1.48 | 1.07 | 0.77–1.47 |
| Quintile 5 | 105 | 1.91 | 1.43–2.55 | 1.71 | 1.26–2.33 |
| Per 1 SD | 1.38 | 1.26–1.50 | 1.31 | 1.19–1.44 | |
| P value | <0.001 | <0.001 | |||
* Adjusted for age, height, weight, serum retinol (all continuous), smoking status (never, former, current smoker), diabetes (yes/no), marital status (single, divorced/widowed, married/cohabiting), circulatory system disease (yes/no), self-rated health (good, not good), and physical activity (low, medium, high).