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Table 3 Univariate and multivariate analysis of soil-transmitted helminth infection and potential risk factors among study participants

From: Prevalence of intestinal parasitic infection and associated risk factors among village health volunteers in rural communities of southern Thailand

Variables Positive No. (%) Negative No. (%) Total n = 324 Crude PR (95% CI) P-value Adjusted PR (95% CI) P-value
Gender
 Male 6 (15.8) 32 (84.2) 38 1.9 (0.8–4.3) 0.135   
 Female 24 (8.4) 262 (91.6) 286     
Age in years
  < 40 6 (6.6) 85 (93.4) 91 0.6 (0.3–1.5) 0.310   
  ≥ 40 24 (10.3) 209 (89.7) 233     
Monthly family income (Thai Baht)
  < 10,000 14 (11.0) 113 (89.0) 127 1.4 (0.7–2.7) 0.380   
  ≥ 10,001 16 (8.1) 181 (91.9) 197     
Education
 Primary/secondary school 30 (9.9) 273 (90.1) 303     
 Bachelor’s degree or higher 0 (0) 21 (100) 21     
Wears shoes when outside
 No 1 (20.0) 4 (80) 5 2.2 (0.4–13.1) 0.387   
 Yes 29 (9.1) 290 (90.9) 319     
Wear boots when on farm
 No 1 (14.3) 6 (85.7) 7 1.6 (0.3–9.9) 0.636   
 Yes 29 (9.1) 288 (90.9) 317     
Open-field defecation
 Yes 29 (11.0) 235 (89.0) 264 6.6 (0.9–47.4) 0.061 5.5 (0.7–41.2) 0.099
 No 1 (1.7) 59 (98.3) 60     
Have dogs at home
 Yes 23 (12.0) 168 (88.0) 191 2.3 (1.0–5.2) 0.047 1.6 (0.7–3.7) 0.276
 No 7 (5.3) 126 (94.7) 133     
Have cats at home
 Yes 12 (8.7) 126 (91.3) 138 0.9 (0.5–1.8) 0.763   
 No 18 (9.7) 168 (90.3) 186     
Contact with domestic animals
 Yes 27 (11.2) 215 (88.8) 242 3.1 (1.0–9.8) 0.061 2.5 (0.8–7.8) 0.131
 No 3 (3.7) 79 (96.3) 82     
Wash hands after touching animals
 No 1 (10.0) 9 (90.0) 10 1.1 (0.2–7.2) 0.934   
 Yes 29 (9.2) 285 (90.8) 314     
Drinks purified water
 Not boiled or filtered 10 (14.3) 60 (85.7) 70 1.8 (0.9–3.7) 0.101   
 Boiled or filtered 20 (7.9) 234 (92.1) 254