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Table 3 Multivariable linear regression analysis of independent variables affecting serum testosterone levels (nmol/L), n = 256

From: Dietary patterns in relation to testosterone levels and severity of impaired kidney function among middle-aged and elderly men in Taiwan: a cross-sectional study

 Model 1 aModel 2 bModel 3 c
β (95% CI)Pβ (95% CI)Pβ (95% CI)P
Age (years)0.01 (−0.02, 0.03)0.630.00 (− 0.02, 0.03)0.780.01 (− 0.03, 0.04)0.78
BMI (kg/m2)− 0.11 (− 0.18, − 0.05)<  0.001− 0.11 (− 0.18, − 0.05)<  0.001− 0.11 (− 0.19, − 0.04)0.004
FBG (mmol/L)−0.15 (− 0.32, 0.01)0.07−0.09 (− 0.26, 0.08)0.30−0.21 (− 0.53, 0.11)0.20
TG (mmol/L)−0.49 (− 0.68, − 0.30)<  0.001−0.42 (− 0.61, − 0.22)<  0.001−0.51 (− 0.77, − 0.24)<  0.001
TC (mmol/L)−0.12 (− 0.34, 0.09)0.25−0.07 (− 0.28, 0.14)0.50−0.14 (− 0.42, 0.13)0.31
HDL-C (mmol/L)0.69 (0.00, 1.37)0.050.36 (−0.34, 1.06)0.310.53 (−0.29, 1.35)0.20
LDL-C (mmol/L)0.04 (−0.21, 0.28)0.770.09 (−0.15, 0.32)0.48−0.02 (− 0.34, 0.31)0.93
TC/HDL-C ratio−0.36 (− 0.59, − 0.13)0.002−0.23 (− 0.48, 0.01)0.06−0.42 (− 0.75, − 0.08)0.014
BUN (mmol/L)−0.08 (− 0.25, 0.10)0.38−0.07 (− 0.24, 0.10)0.400.01(− 0.19, 0.21)0.92
Creatinine (μmol/L)−0.03 (− 0.04, − 0.01)0.015−0.02 (− 0.04, 0.00)0.049−0.02 (− 0.04, 0.01)0.13
eGFR (mL/min/1.73 m2)
 T3Ref Ref Ref 
 T2−0.72(− 1.18, − 0.26)0.002− 0.62 (− 1.08, − 0.17)0.007−0.88 (− 1.43, − 0.33)0.002
 T1− 0.94 (− 1.44, − 0.44)0.001−0.81 (− 1.31, − 0.31)0.002−0.80 (− 1.40, − 0.20)0.010
  1. BMI body mass index, FBG fasting blood glucose, TG triglycerides, TC total cholesterol, HDL-C high density lipoprotein-cholesterol, LDL-C low density lipoprotein-cholesterol, TC/HDL-C total cholesterol-to-high density lipoprotein-cholesterol, BUN blood urea nitrogen, eGFR estimated glomerular filtration rate
  2. a Model 1: adjusted for age
  3. b Model 2: adjusted for age and BMI
  4. c Model 3: adjusted for model 2 and for education level, marital status, family income, smoking, drinking alcohol, sleeping, physical activity, cardiovascular disease, hypertension, diabetes, and CRP levels