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Table 2 Cholera risk factors, Angau General Hospital, Papua New Guinea, 2010

From: Cholera risk factors, Papua New Guinea, 2010

Risk Factor Cases n=54 Controls n=122 Odds ratio Confidence interval p value Adjusted odds ratio Confidence interval p value
  n (%) n (%) (OR) (95%CI)   (aOR) (95%CI)  
Over 20 years of age 17 (32) 65 (53) 2.4 (1.2, 5.2) 0.007 2.7 (1.2, 5.8) 0.012
Resides in an informal settlement 44 (82) 70 (57) 3.2 (1.4, 7.9) 0.002 NA NA NA
River as drinking water source 25 (46) 31 (25) 2.5 (1.2, 5.2) 0.006 NA NA NA
Defecates in open air (or river) 13 (24) 5 (4) 7.4 (2.3, 27.9) 0.0001 4.6 (1.4, 14.9) 0.011
Has soap for hand washing at home 18 (33) 66 (54) 0.42 (0.20 0.87) 0.01 0.41 (0.19, 0.87) 0.021
Chews betel nut 30 (75) 43 (63) 1.74 (0.68, 4.67) 0.2 NA NA NA
Washes hands before eating 17 (32) 54 (49) 0.48 (0.23, 1.01) 0.035 NA NA NA
Knows case of cholera 16 (30) 11 (9) 4.3 (1.7, 11.0) 0.0005 2.4 (0.9, 6.2) 0.075
Attended funeral 5 (9) 12 (10) 0.93 (0.24, 3.02) 0.9 NA NA NA
Knows someone who travelled to cholera area 47 (87) 68 (56) 5.3 (2.2, 15.0) 0.0001 4.5 (1.8, 11.7) 0.002
Shares housing with diarrhoea case 11 (20) 6 (5) 5.0 (1.6, 17.2) 0.001 NA NA NA