Table 3. Univariate Relationship Between Phosphorus Binding Capacity and Patient and Facility Characteristics.
| Patient Characteristics |
n | PBC, mg/d, mean (SD) |
p value |
Facility Characteristics |
n | PBC, mg/d, mean (SD) |
p value |
|---|---|---|---|---|---|---|---|
| Age, y | |||||||
| < 55 | 70 | 285 (161) | <0.001 | ||||
| 55-64 | 66 | 267 (165) | Large dialysis organization |
178 | 247 (157) | 0.05 | |
| 65-74 | 56 | 243 (122) | Small dialysis organization |
66 | 202 (144) | ||
| ≥ 75 | 52 | 118 (96) | |||||
| For profit | 205 | 240 (155) | 0.25 | ||||
| Sex | Non-profit | 39 | 209 (152) | ||||
| Female | 105 | 212 (140) | 0.04 | ||||
| Male | 139 | 252 (162) | Number of patients | ||||
| < 45 | 63 | 222 (160) | 0.28 | ||||
| Race/Ethnicity | 45-64 | 83 | 243 (150) | ||||
| Black | 83 | 248 (154) | 0.21 | 65-84 | 42 | 205 (127) | |
| White | 106 | 215 (146) | ≥85 | 56 | 261 (171) | ||
| Hispanic | 34 | 274 (160) | |||||
| Other | 21 | 222 (180) | Number of stations | ||||
| < 15 | 49 | 199 (135) | 0.27 | ||||
| Weight, kg | 15-19 | 58 | 231 (156) | ||||
| < 65 | 59 | 173 (132) | <0.001 | 20-24 | 83 | 250 (155) | |
| 65-74 | 53 | 225 (142) | ≥ 25 | 54 | 250 (166) | ||
| 75-84 | 47 | 223 (127) | |||||
| ≥85 | 85 | 291 (171) | |||||
| Time receiving dialysis, y | |||||||
| <1 | 41 | 137 (115) | <0.001 | ||||
| 1-2.9 | 90 | 233 (155) | |||||
| 3-4.9 | 53 | 260 (141) | |||||
| ≥5 | 60 | 283 (160) | |||||
| Serum phosphorus, mg/dL |
|||||||
| <4 | 49 | 171 (137) | <0.001 | ||||
| 4-4.74 | 57 | 186 (123) | |||||
| 4.75-5.4 | 52 | 249 (156) | |||||
| ≥5.5 | 86 | 296 (158) |