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Table 3 Percentage of normal semen parameters in infertile men

From: Semen quality pattern and age threshold: a retrospective cross-sectional study of 71,623 infertile men in China, between 2011 and 2017

ParameterNormal semen parameters according to the recommendations (%) a2011 (n = 6236)2012 (n = 8529)2013 (n = 10,205)2014 (n = 11,809)2015 (n = 12,331)2016 (n = 11,075)2017 (n = 11,438)2011–2017 (n = 71,623)
Semen volume(ml)WHO (4th)79.6981.5880.6678.4982.4380.7983.9381.17
WHO (5th)85.1788.5185.7387.5890.5289.1691.7588.63
Sperm concentration(106/ml)WHO (4th)68.9470.9865.2864.9866.0767.2772.1667.77
WHO (5th)70.3672.1368.4368.6271.5170.8275.6571.12
Sperm total count (106)WHO (4th)71.1471.9469.5268.6971.3471.0275.8971.37
WHO (5th)71.2972.2669.7168.8471.5671.1876.1171.58
Sperm progressive motility (PR) bWHO (4th)32.7533.7930.8536.7928.5130.4726.5931.20
WHO (5th)73.2269.5668.4767.5675.6169.9167.8970.22
  1. aAbnormal values of semen parameters were defined by the World Health Organization (WHO) recommendations (4th and 5th). The 4th standards: semen volume < 2 mL, sperm concentration < 20 × 106/mL, sperm total count < 40 × 106, sperm progressive motility(PR) < 50%. The 5th standards: semen volume < 1.5 mL, sperm concentration < 15 × 106/mL, sperm total count < 39 × 106, sperm progressive motility(PR) < 32%
  2. bAzoospermia were excluded