Table 3.
Cross-sectional associations of baseline absolute and relative IDWG with baseline IDH
| Absolute IDWG (n=39,497)a | Relative IDWG (n=39,497)b | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| IDWG (kg) | n | IDH Absent | IDH Present | P | IDWG (%) | n | IDH Absent | IDH Present | P |
| <0.5 | 1418 | 1060 (3.90) | 358 (2.91) | <0.001 | <0.5 | 922 | 690 (2.54) | 232 (1.89) | <0.001 |
| ≥0.5 to <1.0 | 2436 | 1866 (6.86) | 570 (4.64) | ≥0.5 to <1.0 | 1260 | 941 (3.46) | 319 (2.60) | ||
| ≥1.0 to <1.5 | 4729 | 3500 (12.86) | 1229 (10.00) | ≥1.0 to <1.5 | 2251 | 1670 (6.14) | 581 (4.73) | ||
| ≥1.5 to <2.0 | 6638 | 4674 (17.18) | 1964 (15.99) | ≥1.5 to <2.0 | 3851 | 2825 (10.38) | 1026 (8.35) | ||
| ≥2.0 to <2.5 | 7360 | 5048 (18.55) | 2312 (18.82) | ≥2.0 to <2.5 | 5081 | 3554 (13.06) | 1527 (12.43) | ||
| ≥2.5 to <3.0 | 6456 | 4332 (15.92) | 2124 (17.29) | ≥2.5 to <3.0 | 5851 | 4042 (14.85) | 1809 (14.73) | ||
| ≥3.0 to <3.5 | 4525 | 2948 (10.83) | 1577 (12.84) | ≥3.0 to <3.5 | 5635 | 3799 (13.96) | 1836 (14.95) | ||
| ≥3.5 to <4.0 | 2834 | 1825 (6.71) | 1009 (8.21) | ≥3.5 to <4.0 | 4870 | 3297 (12.12) | 1573 (12.80) | ||
| ≥4.0 to <4.5 | 1539 | 971 (3.57) | 568 (4.62) | ≥4.0 to <4.5 | 3448 | 2253 (8.28) | 1195 (9.73) | ||
| ≥4.5 to <5.0 | 737 | 439 (1.61) | 298 (2.43) | ≥4.5 to <5.0 | 2258 | 1514 (5.56) | 744 (6.06) | ||
| ≥5.0 to <5.5 | 377 | 255 (0.94) | 122 (0.99) | ≥5.0 to <5.5 | 1521 | 968 (3.56) | 553 (4.50) | ||
| ≥5.5 to <6.0 | 183 | 120 (0.44) | 63 (0.51) | ≥5.5 to <6.0 | 957 | 623 (2.29) | 334 (2.72) | ||
| ≥6.0 | 265 | 174 (0.64) | 91 (0.74) | ≥6.0 | 1592 | 1036 (3.81) | 556 (4.53) | ||
| <3.0 | 29,058 | 20,498 (75.33) | 8560 (69.98) | <0.001 | <3.5 | 24,851 | 17,521 (64.39) | 7330 (59.67) | <0.001 |
| ≥3.0 | 10,439 | 6714 (24.67) | 3725 (30.32) | ≥3.5 | 14,646 | 9691 (35.61) | 4955 (40.33) | ||
Data are presented as n (%) unless otherwise specified.
IDWG and IDH defined during the exposure assessment period (dialysis days 91–180). The primary definition of IDH is defined as a fall in systolic BP (predialysis to nadir intradialytic) of ≥20 mmHg or more accompanied by at least two responsive measures (reduction in ultrafiltration rate, reduction in blood flow rate, administration of saline, or premature cessation of dialysis). n=27,212 (68.9%) for IDH absent and n=12,285 (31.1%) for IDH present.
IDWG and IDH defined during the exposure assessment period (dialysis days 91–180). Relative IDWG is defined as IDWG as a percentage of postdialysis weight. Primary definition of IDH defined as a fall in systolic BP (predialysis to nadir intradialytic) of ≥20 mmHg accompanied by at least two responsive measures (reduction in ultrafiltration rate, reduction in blood flow rate, administration of saline, or premature cessation of dialysis). n=27,212 (68.9%) for IDH absent and n=12,285 (31.1%) for IDH present.