Table 3.
Associations between postdialysis weight >1.0 kg above target weight during the exposure period and 30-day hospital encounters using varied frequency thresholds for failed target weight achievement
| Outcome | Postdialysis Weight >1.0 kg above Target Weight during the Exposure Period | |||
|---|---|---|---|---|
| <5% of Treatments | 5%–29% of Treatments | 30%–49% of Treatments | ≥50% of Treatments | |
| All-cause ED visits | ||||
| Adjusted risk difference, % (95% CI) | 0.00 (ref.) | 1.19 (1.00 to 1.37) | 1.98 (1.73 to 2.24) | 3.07 (2.82 to 3.34) |
| Adjusted incidence rate difference (95% CI) | 0.00 (ref.) | 17.52 (14.86 to 20.25) | 29.04 (25.71 to 33.12) | 45.96 (42.66 to 49.99) |
| Adjusted risk ratio (95% CI) | 1.00 (ref.) | 1.07 (1.06 to 1.09) | 1.12 (1.11 to 1.14) | 1.19 (1.17 to 1.21) |
| All-cause hospitalizations | ||||
| Adjusted risk difference, % (95% CI) | 0.00 (ref.) | 0.69 (0.52 to 0.83) | 1.20 (0.98 to 1.41) | 2.08 (1.90 to 2.29) |
| Adjusted incidence rate difference (95% CI) | 0.00 (ref.) | 9.41 (7.13 to 11.60) | 16.45 (13.80 to 19.20) | 28.89 (25.83 to 31.91) |
| Adjusted risk ratio (95% CI) | 1.00 (ref.) | 1.06 (1.05 to 1.08) | 1.11 (1.09 to 1.13) | 1.19 (1.17 to 1.21) |
| Cardiovascular hospitalizations | ||||
| Adjusted risk difference, % (95% CI) | 0.00 (ref.) | 0.16 (0.04 to 0.23) | 0.21 (0.09 to 0.35) | 0. 45 (0.33 to 0.58) |
| Adjusted incidence rate difference (95% CI) | 0.00 (ref.) | 1.97 (0.81 to 3.16) | 2.64 (0.93 to 4.34) | 5.70 (4.38 to 7.18) |
| Adjusted risk ratio (95% CI) | 1.00 (ref.) | 1.04 (1.01 to 1.07) | 1.06 (1.03 to 1.10) | 1.13 (1.09 to 1.16) |
| Volume-related hospitalizations | ||||
| Adjusted risk difference, % (95% CI) | 0.00 (ref.) | 0.00 (−0.07 to 0.06) | 0.03 (−0.05 to 0.11) | 0.21 (0.13 to 0.28) |
| Adjusted incidence rate difference (95% CI) | 0.00 (ref.) | 0.04 (−0.62 to 0.78) | 0.35 (−0.57 to 1.39) | 2.61 (1.68 to 3.64) |
| Adjusted risk ratio (95% CI) | 1.00 (ref.) | 1.00 (0.95 to 1.04) | 1.02 (0.96 to 1.08) | 1.15 (1.09 to 1.21) |
Adjusted risk differences are percentages (%). Adjusted incidence rate differences are per 100 person-yr. The null value for a risk difference is 0.00%, the null value for an incidence rate difference is 0.00, and the null value for a risk ratio is 1.00. ED, emergency department; 95% CI, 95% confidence interval; ref., referent.