Table 2.
Estimated ORs for associations of patient-level variables and HD treatment variables with patient-reported recovery time
| Characteristic | Model 1* | Model 2** |
|---|---|---|
| Age, per 5-y older | 1.05 (1.03–1.07) | 1.03 (1.01–1.06) |
| Male sex, vs female sex | 0.83 (0.75–0.92) | 0.86 (0.77–0.97) |
| Dialysis vintage, per 1-y longer | 1.02 (1.01–1.03) | 1.02 (1.01–1.03) |
| BMI, per 5-kg/m2 higher | 1.08 (1.03–1.13) | 1.07 (1.02–1.12) |
| Diabetes, vs no | 1.19 (1.08–1.31) | 1.14 (1.02–1.27) |
| Psychiatric disorder, vs no | 1.47 (1.28–1.70) | 1.39 (1.20–1.62) |
| Full-time employment, vs no | 0.66 (0.53–0.81) | 0.73 (0.59–0.91) |
| Catheter, vs fistula/graft | 1.16 (1.02–1.32) | 1.13 (0.99–1.29) |
| Albumin, per 1-g/dL higher | 0.87 (0.81–0.93) | 0.89 (0.83–0.95) |
| Hemoglobin, per 1-g/dL higher | 0.99 (0.95–1.04) | 1.01 (0.97–1.06) |
| Hemodiafiltration, vs standard HD | 1.08 (0.87–1.35) | 1.09 (0.88–1.35) |
| Intradialytic weight loss, per 1% higher | 1.05 (1.02–1.09) | 1.04 (1.00–1.08) |
| Dialysate sodium, vs 140 mEq/L | ||
| <140 mEq/L | 1.28 (1.07–1.53) | 1.34 (1.11–1.61) |
| >140 mEq/L | 1.08 (0.90–1.30) | 1.06 (0.89–1.27) |
| HD session length, per 30-min longer | 1.06 (1.01–1.11) | 1.05 (1.00–1.10) |
| ΔSBP, per 10–mm Hg greater | 1.00 (0.98–1.03) | 1.00 (0.98–1.03) |
| Single-pool Kt/V, per 0.1 higher | 1.01 (0.99–1.03) | 1.00 (0.98–1.02) |
| Blood flow rate, per 20-mL/min higher | 0.98 (0.96–1.01) | 0.99 (0.97–1.01) |
| Ultrafiltration rate, vs 5–15 mL/mina | ||
| <5 mL/min | 0.85 (0.74–0.97) | 0.86 (0.75–0.99) |
| ≥15 mL/min | 0.75 (0.63–0.90) | 0.73 (0.61–0.87) |
Note: Values are given as OR (95% confidence interval). Proportional ORs above (below) 1.0 indicate an increased propensity to report longer (shorter) recovery time category; i.e. <2 h vs. ≥2 h, ≤6 h vs. ≥7 h, or ≤12 h vs. >12 h.
BMI, body mass index; SBP, systolic blood pressure; OR, odds ratio; spKt/V, single-pool Kt/V; HD, hemodialysis
Model 1: adjusted for country and race (US black only), age, male sex, dialysis vintage, and BMI and accounting for facility clustering.
Model 2: Model 1 adjustments plus 14 summary comorbidities, full-time employment, catheter use, albumin, hemoglobin, hemodiafiltration use, intradialytic weight loss, dialysate sodium, session length, ΔSBP, blood flow rate, and sKt/V.
Estimated OR from a separate model excluding adjustments for session length and intradialytic weight loss due to collinearity.