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Table 1 The basic characteristics of the study subjects

From: Is BRD7 associated with spermatogenesis impairment and male infertility in humans? A case-control study in a Han Chinese population

Parameters Patients Controls
OZ (n = 173) AZ (n = 142) NZ (n = 995)
BMI (kg/m2)a 22.89 ± 2.25 22.76 ± 1.96 22.34 ± 2.67
SC (n × 106/ml)b 6.60 (2.55–10.86) / 61.46 (40.95–91.88)
TSC (n × 106/ejaculate)b 15.88 (5.87–27.13) / 212.07 (133.38–317.08)
Total molitility (PR + NP, %) b 38.24 (28.00–53.39) / 64.56 (50.77–76.70)
FSH (mIU/ml) a 5.73 ± 3.69 8.77 ± 3.64 4.83 ± 1.73
LH (mIU/ml) a 5.72 ± 3.47 6.93 ± 2.88 4.87 ± 2.01
T (ng/ml) a 4.81 ± 1.59 4.52 ± 2.05 5.12 ± 1.63
  1. OZ oligozoospermia, AZ azoospermia, NZ normozoospermia, BMI Body mass index, SC Sperm concentration, TSC Total sperm count, PR progressive motility (grades a + b), NP non-progressive motility (grade c), FSH Follicle-stimulating hormone, LH Luteinizing hormone, T Testosterone. a Mean ± standard deviation, b Median and interquartile range