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Table 3 Annual distribution of the individuals clustering and prevalence of DRMs

From: Characteristics of HIV-1 molecular transmission networks and drug resistance among men who have sex with men in Tianjin, China (2014–2018)

Year of diagnosis Number of infections (%)a Clustering (%)a,b Prevalence of DRMs (%)a,c
2014 40 (100) 11 (27.5) 2 (5.0)
2015 57 (100) 16 (28.1) 2 (3.5)
2016 62 (100) 24 (38.7) 5 (8.1)
2017 158 (100) 35 (22.2) 14 (8.9)
2018 119 (100) 24 (20.2) 7 (5.9)
Total 436 (100) 110 (25.2) 30 (6.9)
  1. aNumbers in parentheses indicate the proportion of HIV-1 cases as a percentage of each subgroup
  2. bχ2 = 8.450, p = 0.075 calculated using Fisher’s exact method
  3. cχ2 = 2.200, p = 0.697 calculated using Fisher’s exact method