Table 1.
Demographic characteristics and clinical characteristics of the study population.
| Variables | Total | Hyperphosphatemia | p-value | ||
|---|---|---|---|---|---|
| (n = 141) | no (n = 38) | yes (n = 103) | |||
| Gender, n (%) | Male | 55 (39) | 15 (27.3) | 40 (72.7) | 0.945a |
| Female | 86 (61) | 23 (26.7) | 63 (73.3) | ||
| Age (years), mean ± SD | 56.60 ± 12.96 | 57.95 ± 13.78 | 56.11 ± 12.67 | 0.456b | |
| BMI (kg/m2), mean ± SD | 22.29 ± 3.02 | 22.02 ± 3.22 | 22.39 ± 2.95 | 0.475b | |
| Marital Status, n (%) | Unmarried | 15 (10.6) | 6 (40.0) | 9 (60.0) | 0.228a |
| Married | 126 (89.4) | 32 (25.4) | 94 (74.6) | ||
| Education level, n (%) | Primary school and Below | 14 (9.9) | 7 (18.4) | 7 (6.8) | 0.156a |
| Junior middle school | 40(28.4) | 10 (26.3) | 30 (29.1) | ||
| High school or junior college | 49(34.8) | 9 (23.7) | 40 (38.8) | ||
| College | 19 (13.5) | 7 (18.4) | 12 (11.7) | ||
| Bachelor’s degree or above | 19 (13.5) | 5 (13.2) | 14 (13.6) | ||
| Occupational, n (%) | On-the-job | 18 (12.8) | 1 (2.6) | 17 (16.5) | 0.145a |
| Liberal professions | 14 (9.9) | 3 (7.9) | 11 (10.7) | ||
| Retirement | 67 (47.5) | 21 (55.3) | 46 (44.7) | ||
| Unemployed | 42 (29.8) | 13 (34.2) | 29 (28.2) | ||
| Financial burden, n (%) | None | 33 (23.4) | 5 (13.2) | 28 (27.2) | 0.172a |
| Light | 64 (45.4) | 18 (47.4) | 46 (44.7) | ||
| Heavy | 44 (31.2) | 15 (39.5) | 29 (28.2) | ||
| The primary cause of PD, n (%) | Diabetic nephropathy | 35 (24.8) | 12 (31.6) | 23 (22.3) | 0.546a |
| Hypertension | 65 (46.1) | 14 (36.8) | 51 (49.5) | ||
| Chronic glomerulonephritis | 22 (15.6) | 6 (15.8) | 16 (15.5) | ||
| Others | 19 (13.5) | 6 (15.8) | 13 (12.6) | 0.546a | |
| Taking phosphorus binders, n (%) | None | 10 (7.1) | 9 (90.0) | 1 (10.0) | <0.001a |
| Lanthanum carbonate | 88 (62.4) | 18 (20.5) | 70 (79.5) | ||
| Calcium acetate | 31 (22.0) | 11 (35.5) | 20 (64.5) | <0.001a | |
| Calcium carbonate | 3 (2.1) | 0 (0) | 3 (100) | ||
| Others | 9 (6.4) | 0 (0) | 9 (100) | ||
ap-value of the chi-square test for independence; bp-value of t-test for independent samples; BMI, body mass index; PD, peritoneal dialysis.