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

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

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)

^aNumbers in parentheses indicate the proportion of HIV-1 cases as a percentage of each subgroup
^bχ² = 8.450, p = 0.075 calculated using Fisher’s exact method
^cχ² = 2.200, p = 0.697 calculated using Fisher’s exact method

ISSN: 1743-422X