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Table 1 Basic characteristics of the eligible studies included in the present meta-analysis

From: Impact of human papillomavirus infection in semen on sperm progressive motility in infertile men: a systematic review and meta-analysis

StudyCountryAge /Sample size (n)HPV genotypeStudy Design
HPV+patientsHPV−patients
Moghimi 2019 [20]IranNA (n = 8)NA (n = 62)16, 18, 31, 33, 35, 39, 45, 51, 52, 56, 58, 59Case-control
Yang 2016 [24]ChinaNA (n = 64)NA (n = 289)18 HPV genotypes including 16,45,52,59,18,33,68,81Cross-sectional
Garolla 2016 [21]ItalyNA (n = 54)NA (n = 172)NACross-sectional
Foresta 2015 [22]Italy37.1 ± 7.4 (n = 179)38.2 ± 8.1 (n = 440)6, 11, 16, 18, 26, 31, 33, 35, 39, 40,42, 43, 44, 45, 51, 52, 53, 54, 56, 58, 59, 66, 68, 69, 71, 70, 73, 74,Cohort
Yang 2015 [25]ChinaNA (n = 86)NA (n = 41)6,11,16,18,31,33,45,52,56,58Cross-sectional
Zheng 2014 [26]ChinaNA (n = 30)NA (n = 300)6,16,18,31,33,52,58Cross-sectional
Foresta 2013 [23]Italy38.8 ± 9.8 (n = 16)37.5 ± 5.9 (n = 16)HPV-16Cross-sectional
Yang 2013 [19]ChinaNA (n = 107)NA (n = 508)At least 20 HPV genotypes, including 6, 11,16, 18, 31, 33,39, 40, 42, 43,45, 51, 52, 53,54, 59, 66, 68,70, 81Cross-sectional
Garolla 2013 [17]Italy35.3 ± 4.7 (n = 61)34.2 ± 3.8 (n = 104)6, 11, 16, 18, 26, 31, 33, 35, 39, 40, 42, 43, 44, 45, 51, 52, 53, 54, 56, 58, 59, 66, 68, 69/71, 70, 73, 74, 82.Cross-sectional
Foresta 2010 [18]ItalyNA (n = 11)NA (n = 97)6,16,18,52,53,56,61,66,70,84,90Cross-sectional