TABLE 6.
Predictors of donation intensity for active donors among the Danish National Health Survey participants
| Baseline characteristic | HR (95% CI) crude | HR (95% CI) adjusted for sex and age | HR (95% CI) further adjusted |
|---|---|---|---|
| BMI: body mass index a | 1.01 (1.01–1.01) | 1.01 (1.01–1.01) | 1.01 (1.01–1.01) |
| PCS: SF‐12 physical component score a | 1.00 (0.99–1.00) | 1.00 (1.00–1.00) | 1.00 (1.00–1.00) |
| MCS: SF‐12 mental component score a | 1.00 (1.00–1.00) | 1.00 (1.00–1.00) | 1.00 (1.00–1.00) |
| BMI < 18.5 (thin) | 0.90 (0.83–0.98) | 0.98 (0.90–1.06) | 0.96 (0.88–1.05) |
| BMI 18.5 ≤ BMI < 25 (normal) | 1.00 (Ref) | 1.00 (Ref) | 1.00 (Ref) |
| BMI 25 ≤ BMI < 30 (overweight) | 1.10 (1.09–1.12) | 1.05 (1.04–1.06) | 1.06 (1.04–1.07) |
| BMI 30 ≤ BMI (obese) | 1.09 (1.07–1.11) | 1.07 (1.05–1.09) | 1.08 (1.06–1.10) |
| PCS < 40 | 1.06 (1.02–1.10) | 1.03 (1.00–1.07) | 1.01 (0.98–1.05) |
| PCS 40 ≤ PCS < 60 | 1.00 (Ref) | 1.00 (Ref) | 1.00 (Ref) |
| PCS 60 ≤ PCS | 0.95 (0.94–0.97) | 1.01 (0.99–1.03) | 1.01 (0.99–1.03) |
| MCS < 40 | 0.96 (0.94–0.98) | 1.00 (0.97–1.02) | 0.99 (0.96–1.01) |
| MCS 40 ≤ MCS < 60 | 1.00 (Ref) | 1.00 (Ref) | 1.00 (Ref) |
| MCS 60 ≤ MCS | 1.06 (1.04–1.08) | 1.00 (0.98–1.02) | 1.00 (0.98–1.02) |
| Alcohol consumption: high risk | 1.00 (0.98–1.02) | 1.02 (1.00–1.04) | 0.99 (0.97–1.01) |
| Alcohol consumption: moderate | 0.97 (0.95–0.98) | 1.00 (0.98–1.01) | 0.99 (0.98–1.00) |
| Alcohol consumption: low risk | 1.00 (Ref) | 1.00 (Ref) | 1.00 (Ref) |
| Binge drinking: yes | 0.97 (0.96–0.99) | 0.98 (0.97–0.99) | 0.98 (0.96–0.99) |
| Binge drinking: no | 1.00 (Ref) | 1.00 (Ref) | 1.00 (Ref) |
| Smoking: current | 0.99 (0.98–1.01) | 0.99 (0.97–1.00) | 0.97 (0.95–0.98) |
| Smoking: former | 1.00 (0.99–1.01) | 0.97 (0.96–0.99) | 0.96 (0.95–0.97) |
| Smoking: never | 1.00 (Ref) | 1.00 (Ref) | 1.00 (Ref) |
| Physical activity: extreme | 0.98 (0.96–1.01) | 1.01 (0.98–1.03) | 1.00 (0.98–1.03) |
| Physical activity: high | 1.01 (1.00–1.02) | 1.00 (0.98–1.01) | 1.00 (0.99–1.01) |
| Physical activity: light | 1.00 (Ref) | 1.00 (Ref) | 1.00 (Ref) |
| Physical activity: passive | 0.99 (0.96–1.01) | 0.99 (0.96–1.01) | 0.99 (0.97–1.01) |
Note: The hazard ratios (HR) denote increased (HR > 1) or decreased (HR < 1) rate of lapsing. The reference range for both the SF‐12 physical component score (PCS) and SF‐12 mental component score (MCS) is 0–100. Higher scores indicates better physical health for PCS and better mental health for MCS. Further adjusted HRs were adjusted for region (of residence at time of invitation), attained highest education (short(basic school), medium, long(12+ years)), and income (percentile of personal annual income). In addition, the predictors PCS, MCS, and BMI were also adjusted for smoking status, diet, alcohol consumption, and physical activity.
HRs per unit increase in score or value.