Prevalence of anal human papillomavirus infection in patients with human immunodeficiency virus infection: A systematic review

Table 1 Comparative summary of the articles studied

Ref.	Location	n	Study design	Predominant age	Predominant number of lifetime partners	Prevalence of anal HPV infection in HIV+ patients	Prevalence of anal HPV infection in HIV- patients
Li et al[17], 2016	China	889	Transversal	≤ 39 yr old: 79.53%	6-30: 58.71%	82.69%	62.81%
Wirtz et al[18], 2015	Moscow, Russia	124	Transversal	≤ 35 yr old: 82.1%	α ≥ 5: 64.5%	50%	30.30%
Hu et al[21], 2013	Beijing, China	671	Transversal	Median: 28 yr old	-	82.10%	57.50%
Lin et al[19], 2018	Taiwan	279	Transversal	< 30 yr old: 71%	< 10: 81.0%	85.30%	73.30%
Welling et al[25], 2015	Amsterdam	778	Prospective cohort	Median: 38 yr old	> 100: 64.42%	69%	45%
Wiley et al[24], 2013	United States	1262	Multicenter cohort	≤ 59 yr old: 71%	Average: 270	91%	70%
Zhang et al[22], 2014	Shenzhen, China	408	Transversal	20-39 yr old: 88.9%	Median: 3	71.40%	33.80%
Ren et al[26], 2017	China	164	Transversal	≤ 34 yr old: 91.4%	γ ≥ 1: 92.9%	81%	48.20%
Nowak et al[20], 2016	Nigeria	154	Transversal	≤ 29 yr old: 81.1%	≤ 50: 75.32%	91.10%	40.60%
Somia et al[23], 2018	Southeast Asia	392	Prospective cohort	≥ 30 yr old: 58.2%	Median: 42.5	89.80%	65.30%

α: Last 12 mo; γ: Last 3 mo. HPV: Human papillomavirus; HIV: Human immunodeficiency virus.