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. 2019 Sep 11;14(9):e0221992. doi: 10.1371/journal.pone.0221992

Table 1. Comparison of demographics, clinical characteristics, and sex hormone levels between asymptomatic and symptomatic patients divided based on erectile function.

Asymptomatic based on erectile function
(n = 13)
Symptomatic based on erectile function
(n = 16)
p-value
Clinical characteristics
Age, years 44.4 ±8.4 52.1 ±10.9 0.045
BMI, kg/mm2 54.8 ±12.4 46.9 ±7.3 0.041
Type 2 diabetes, n (%) 5 (38%) 14 (88%) 0.006
Duration of diabetes, years 5±3 6±5 0.787
Pre-diabetes and type 2 diabetes, n (%) 10 (77%) 14 (88%) 0.453
Hypertension, n (%) 4 (30%) 11 (68%) 0.042
Antihypertensives, n 0 (0–1) 1 (0–2) 0.092
Biochemistry
HbA1c, mmol/mol 52±13 55±15 0.591
Total cholesterol, mmol/l 3.8±1.2 4.0±1.0 0.796
Triglyceride, mmol/l 1.0±0.5 1.3±0.5 0.206
HDL-C, mmol/l 1.01±0.38 0.95±0.22 0.702
LDL-C, mmol/l 2.5±1.0 2.4±0.8 0.808
Sex hormones
Low testosterone, n (%) 7 (54) 10 (63) 0.638
Total testosterone, nmol/L 9.0 (6.4–12.3) 8.8 (6.4–11.0) 0.914
Free testosterone, pmol/L 179 (132–311) 176 (120–216) 0.351
Sex hormone-binding globulin, nmol/L 29.2 (21.7–35.5) 32.1 (21.7–38.3) 0.559
Luteinising hormone, mIU/Ml 2.3±1.2 3.5±1.9 0.059
Follicle-stimulating hormone, mIU/L 4.2 (2.9–4.7) 3.5 (2.4–4.9) 0.779
Dihydrotestosterone, nmol/L 0.60 (0.34–0.98) 0.62 (0.50–0.99) 0.914
Dehydroepiandrosterone sulphate, nmol/L 2.2 (1.1–3.4) 1.3 (0.9–3.6) 0.537
Androstenedione, nmol/L 2.3 (1.6–3.0) 1.6 (1.3–2.4) 0.170

Notes: Data are presented as mean and standard deviation for normally-distributed variables and median and interquartile range for non-parametric variables. Independent t-test was performed for normally-distributed variables, Mann-Whitney U test for non-parametric variables, and chi-squared test for categorical variables when comparing asymptomatic and symptomatic groups. p<0.05 is considered statistically significant.

Abbreviations: BMI, body mass index; HbA1c, glycosylated haemoglobin; HDL-C, high-density lipoprotein cholesterol; LDL-C, low-density lipoprotein cholesterol.