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Table 1 Single factor analysis of influencing factors for Blastocystis infection among HIV patients

From: Risk factors for Blastocystis infection in HIV/AIDS patients with highly active antiretroviral therapy in Southwest China

Variable Blastocystis (+)
n = 12
N (%)
Blastocystis (−)
n = 299
N (%)
Univariate analysis
χ2 P value OR (95% CI)
Age <  40 year (n = 179) 8 (4.5) 171 (95.5) 0.424 0.515 0.67 (0.20–2.27)
≥ 40 year (n = 132) 4 (3.0) 128 (97.0)
Gender Male (n = 149) 3 (2.0) 146 (5.6) 2.656 0.105 2.86 (0.76–10.78)
Female (n = 162) 9 (98.0) 153 (94.6)
Nationality Minority nationality (n = 11) 1 (9.1) 11 (90.9) 0.356 0.38 (0.04–3.24)
Han nationality (n = 300) 10 (3.7) 289 (96.3)
Residence Urban (n = 260) 10 (3.8) 250 (96.2) 0.001 0.980 1.02 (0.22–4.80)
Rural area (n = 51) 2 (3.9) 49 (96.1)
Education level Primary school (n = 132) 6 (4.5) 126 (95.5) 1.583 0.633
Junior middle school (n = 161) 6 (3.7) 155 (96.3)
High school (n = 15) 0 (0.0) 15 (100.0)
University or collage (n = 3) 0 (0.0) 3 (100.0)
Marriage Unmarried (n = 25) 0 (0.0) 25 (100.0) 4.487 0.213
Married (n = 259) 12 (4.6) 247 (95.4)
Married and living alone or widowed (n = 22) 0 (0.0) 22 (100.0)
Other (n = 5) 0 (0.0) 5 (100.0)
Family member < 5 individuals (n = 48) 1 (2.1) 47 (97.9) 0.701 2.05 (0.26–16.27)
5 individuals (n = 263) 11 (42) 252 (95.8)
Body mass index Underweight (n = 29) 2 (6.9) 27 (93.1) 2.862 0.210
Normal (n = 271) 9 (3.3) 262 (96.7)
Overweight (n = 11) 1 (9.1) 10 (90.7)
Drinking water Boiled water (n = 291) 7 (2.4) 284 (97.6) <  0.001 13.50 (3.80–47.70)
Un-boiled water (n = 20) 5 (25.0) 15 (75.0)
Water source No-tap water (n = 11) 0 (0.0) 11 (100.0) 0.999
Tap water (n = 300) 12 (4.0) 288 (96.0)
Toilet type Water wash toilet (n = 135) 3 (2.2) 132 (97.8) 1.722 0.789 2.37 (0.63–8.93)
Un-water wash toilet (n = 176) 9 (5.1) 167 (94.9)
Washing hand after defecation No (n = 12) 2 (16.7) 10 (3.3) 0.071 0.17 (0.03–0.90)
Yes (n = 299) 10 (3.3) 289 (96.7)
Keeping pet No (n = 230) 8 (3.5) 222 (96.5) 0.518 1.44 (0.44–4.92)
Yes (n = 81) 4 (4.9) 77 (95.1)
Raising animal No (n = 146) 1 (0.7) 145 (99.3) 0.006 10.36 (1.32–81.23)
Yes (n = 165) 11 (6.7) 154 (93.3)
HIV infection route Syringe (n = 18) 3 (16.7) 15 (83.3) 6.239 0.044
Mother to children (n = 6) 0 (0.0) 6 (100.00)
Sex (n = 287) 9 (3.1) 278 (96.9)
Take antiviral drug No (n = 2) 0 (0.0) 2 (100.0) 0.999 1.04 (1.02–10.06)
Yes (n = 309) 12 (3.9) 297 (96.1)
Household member chronic diarrhea No (n = 294) 10 (3.4) 2 (11.8) 0.134 3.79 (0.76–18.84)
Yes (n = 17) 2 (11.8) 15 (88.2)
CD4+ T cell count < 500 (n = 139) 1 (0.6) 171 (99.4) 11.141 0.001 0.07 (0.01–0.53)
500 (n = 172) 10 (3.6) 268 (96.4)
HIV virus load < 50 (n = 282) 7 (2.5) 275 (97.5) 0.002 8.18 (2.41–27.75)
50 (n = 29) 5 (17.2) 24 (82.8)
HIV clinical stage I stage (n = 138) 7 (5.1) 131 (94.9) 2.439 0.486
II stage (n = 73) 3 (4.1) 70 (95.9)
III stage (n = 82) 2 (2.4) 80 (97.6)
IV stage (n = 18) 0 (0.0) 18 (100.0)
  1. The “–” symbol indicates the data was not be calculated
  2. OR Odd ratio, CI Confidence interval