Table II.
Comparison of baseline characteristics of RCC between the high and low expression UCP1 groups.
| Characteristics | Low UCP1 group (n=29) | High UCP1 group (n=21) | P-value |
|---|---|---|---|
| Age (years) | 51.03±8.85 | 53.76±7.42 | 0.256 |
| Male sex, n (%) | 14 (48.28) | 11 (52.38) | 0.774 |
| BMI (kg/m2) | 24.12±3.13 | 24.56±2.67 | 0.605 |
| WC (cm) | 89.41±11.87 | 91.00±10.10 | 0.622 |
| BBT (°C) | 36.53±0.26 | 36.40±0.28 | 0.084 |
| RHR (bpm) | 74.21±7.45 | 74.33±6.13 | 0.949 |
| Fuhrman grade, n (%) | 0.020 | ||
| I–II | 26 (89.66) | 12 (57.14) | |
| III–IV | 3 (10.34) | 9 (42.86) | |
| Histopathology, n (%) clear cell RCC | 29 (100.00) | 21 (100.00) | 1.000 |
| Necrosis, n (%) | 10 (34.48) | 6 (28.57) | 0.658 |
| T stage, n (%) | 0.014 | ||
| ≤T2 | 28 (96.55) | 14 (66.67) | |
| >T2 | 1 (3.45) | 7 (33.33) | |
| Metastasis, n (%) | 1.000 | ||
| N0 and M0 | 29 (100.00) | 21 (100.00) | |
| N1-2 or M1 | 0 (0.00) | 0 (0.00) |
Data were analyzed by unpaired t-tests. All values are expressed as mean ± standard deviation for continuous variables and as number of patients (percentage) for categorical variables. Continuous variables were analyzed by independent-sample t-tests, two-sided type I error of 0.05. Categorical variables were analyzed by χ2-tests. RCC, renal cell carcinoma; UCP1, uncoupling protein 1; BMI, body mass index; WC, waist circumference; BBT, basal body temperature; RHR, resting heart rate.