Skip to main content

Table 2 Comparison of clinical characteristics between low and high gustatory threshold for salty taste

From: Factors associated with gustatory threshold for salty taste in peritoneal dialysis patients

  Detection threshold Recognition threshold
  Normal ( 0.6 mg/cm2)
n = 7
High ( 0.8 mg/cm2)
n = 15
P value Normal ( 0.8 mg/cm2)
n = 5
High ( 1.0 mg/cm2)
n = 17
P value
Age (years) 78 (61–87) 61 (52–68) 0.029 78 (49–88) 63 (54–73) 0.327
Male:female 5:2 5:10 0.172 3:2 7:10 0.624
Duration of PD (months) 7 (6–24) 54 (16–66) 0.041 6 (4–21) 39 (12–65) 0.046
Comorbidity (%)
 Hypertension 83.3 86.7 > 0.99 75.0 88.2 0.489
 Diabetes mellitus 16.7 26.7 > 0.99 50.0 17.7 0.228
 Cardiovascular diseases 33.3 13.3 0.544 50.0 11.8 0.148
Body weight (kg) 64 (46.1–69.1) 59 (51.5–63) 0.647 55 (44–69) 60 (54–64) 0.611
Systolic BP (mmHg) 133 (121–145) 133 (123–142) 0.916 133 (118–145) 132 (122–144) 0.845
Diastolic BP (mmHg) 70 (62–87) 71 (57–84) 0.778 65 (56–87) 71 (58–85) 0.845
Effluent volume (mL/day) 300 (150–416) 274 (170–746) 0.631 342 (150–416) 274 (170–746) 0.695
Urinary volume (mL/day) 1250 (1000–1500) 1000 (750–1500) 0.374 1500 (1175–1650) 1000 (815–1400) 0.123
Hb (g/dL) 11.1 (10.5–12.1) 10.7 (9.7–11.7) 0.597 11.1 (10.7–12.3) 10.7 (9.7–11.6) 0.158
TP (g/dL) 6.8 (6.7–6.8) 6.2 (5.9–7) 0.119 6.8 (6.5–7.2) 6.4 (5.9–6.9) 0.146
Alb (g/dL) 3.4 (3–3.7) 3.4 (3.1–3.6) 0.859 3.2 (3.0–3.6) 3.4 (3.2–3.7) 0.325
Na (mEq/L) 138 (137–140) 138 (136–143) 0.972 138 (137–141) 138 (137–142) 0.752
K (mEq/L) 4.6 (4.1–5.1) 4.0 (3.4–4.5) 0.052 4.9 (4.1–5.3) 4.0 (3.5–4.6) 0.065
Cl (mEq/L) 105 (103–106) 103 (98–106) 0.455 105 (100–106) 103 (99–106) 0.901
Corrected Ca (mg/dL) 9.9 (8.6–10.1) 9.5 (9.3–10.2) 0.479 9.9 (9.0–10.1) 9.5 (9.1–10.2) 0.875
P (mg/dL) 3.9 (3.4–4.2) 5.2 (4.3–5.7) 0.009 3.9 (3.4–4.3) 5.1 (4.1–5.7) 0.029
Zn (mg/dL) 68 (58–84) 60 (54–77) 0.467 82 (56–88) 61 (54–76) 0.201
Intact-PTH (pg/mL) 163 (33–260) 137 (69–196) 0.597 49 (37–211) 140 (76–236) 0.147
BUN (mg/dL) 54 (49–60) 55 (46–61) 0.944 49 (44–68) 55 (48–61) 0.530
Cr (mg/dL) 6.3 (4.2–7.6) 8.5 (6.2–11.9) 0.084 6.1 (4.1–6.8) 8.4 (6.8–11.8) 0.017
UA (mg/dL) 7.2 (5.6–7.9) 6.2 (5.4–6.9) 0.158 5.6 (4.9–8.4) 6.5 (5.4–7.0) 0.814
β2 microglobulin (mg/L) 12 (10–17) 19 (12–23) 0.061 12 (10–13) 19 (15–23) 0.007
Ferritin (ng/mL) 151 (66–280) 168 (99–307) 0.647 95 (59–236) 168 (105–299) 0.290
TSAT (%) 28 (22–33) 39 (28–53) 0.045 28 (22–34) 35 (27–52) 0.108
HCO3 (mmol/L) 23 (23–28) 24 (23–28) 0.526 26 (22–29) 24 (23–27) 0.505
CRP (mg/dL) 0.21 (0.09–0.28) 0.10 (0.02–1.20) 0.606 0.16 (0.12–0.49) 0.14 (0.02–0.99) 0.694
Urinary protein (g/g Cr) 1.1 (0.3–3.5) 2.1 (0.7–3.7) 0.436 2.3 (0.5–3.8) 1.1 (0.7–3.6) 0.788
CTR (%) 50 (48–58) 50 (47–59) 0.859 48 (48–58) 50 (48–59) 0.636
Total Kt/V 1.81 (1.63–2.26) 2.00 (1.81–2.47) 0.259 2.26 (1.71–2.66) 1.96 (1.80–2.24) 0.666
Peritoneal Kt/V 0.98 (0.54–1.17) 1.31 (0.90–1.87) 0.053 0.59 (0.47–1.08) 1.31 (0.94–1.87) 0.015
Renal Kt/V 1.09 (0.55–1.25) 0.85 (0.37–1.31) 0.597 1.25 (1.16–1.87) 0.74 (0.30–0.99) 0.017
Salt excretion (g/day) 9.5 (4.7–11.6) 7.9 (6.8–10.7) 0.967 11.0 (4.5–11.4) 7.7 (6.3–10.4) 0.485
  1. Data are shown as n (%) or median (interquartile range)
  2. Fisher’s exact test was used to compare nominal variables, and Wilcoxon rank-sum test was used for continuous variables
  3. Alb albumin, BP blood pressure, BUN blood urea nitrogen, Ca calcium, Cl chloride, Cr creatinine, CRP C-reactive protein, CTR cardiothoracic ratio, Hb hemoglobin, K potassium, Na sodium, P phosphorus, PD peritoneal dialysis, PTH parathyroid hormone, TP total protein, TSAT transferrin saturation, UA uric acid, Zn zinc