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Table 4 Characteristics of transmission clustered individuals

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

  Total
N (%)a
Not clustered
N (%)a
Clustered χ2 P
≤ 5 nodes/cluster
N (%)a
> 5 nodes/cluster
N (%)a
Total (%) 436 (100) 326 (74.8) 86 (19.7) 24 (5.5)   
Age (years)      113.777 0.028b
< 25 108 (100) 73 (67.6) 30 (27.8) 5 (4.6)   
25–34 174 (100) 124 (71.3) 36 (20.7) 14 (8.0)   
35–44 70 (100) 59 (84.3) 10(14.3) 1(1.4)   
> 45 84 (100) 70 (83.3) 10 (11.9) 4 (4.8)   
Marital status      3.476 0.170
Single 290 (100) 209 (72.1) 65 (22.4) 16 (5.5)   
Married 57 (100) 47 (82.5) 8 (14.0) 2 (3.5)   
Divorced/widowed 89 (100) 70 (78.7) 13 (14.6) 6 (6.7)   
Nationality      4.465 0.314
Han 410 (100.0) 305 (74.3) 81 (19.8) 24 (5.9)   
Other 26 (100.0) 21 (80.8) 5 (19.2) 0 (0.0)   
Education      2.564 0.635
Middle school and below 127 (100.0) 89 (70.1) 31 (24.4) 7 (5.5)   
High school 128 (100.0) 99 (77.3) 22 (17.2) 7 (5.5)   
College and above 181 (100.0) 138 (76.2) 33 (18.2) 10 (5.5)   
Permanent register      1.610 0.447
Tianjin 324 (100.0) 237 (73.1) 68 (21.0) 19 (5.9)   
Other 112(100.0) 89 (79.5) 18 (16.1) 5 (4.5)   
STDs      9.166 0.010b
With 146 (100.0) 97 (66.4) 36 (24.7) 13 (8.9)   
Without 290 (100.0) 229 (79.0) 50 (17.2) 11 (3.8)   
Genotype      62.667 0.000b
CRF01_AE 248 (100.0) 186 (75.0) 56 (22.6) 6 (2.4)   
CRF07_BC 121 (100.0) 103 (85.1) 12 (9.9) 6 (5.0)   
B 32 (100.0) 18 (56.2) 2 (6.3) 12 (37.5)   
CRF55_01B 18 (100.0) 10 (55.6) 8 (44.4) 0 (0.0)   
URFs 16 (100.0) 8 (50.0) 8 (50.0) 0 (0.0)   
CRF59_01B 1 (100.0) 1 (100.0) 0 (0.0) 0 (0.0)   
DRM      20.990 0.003b
With 30 (100.0) 19 (63.3) 4 (13.4) 7 (23.3)   
Without 406 (100.0) 307 (75.6) 82 (20.2) 17 (4.2)   
  1. aNumbers in parentheses indicate the proportion of HIV-1 subtypes as a percentage of each subgroup
  2. bp < 0.05 calculated using Fisher’s exact method