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Table 4 Travel and odds ratio for being a case from multiple logistic regression

From: Risk factors for malaria in high incidence areas of Viet Nam: a case–control study

Travel variable Total Cases Controls Odds ratio for case p value
To different province 122 (6.1%) 78 (7.8%) 44 (4.4%) 0.5238 (0.2582–1.034) 0.0665
To different district 169 (8.5%) 115 (11.5%) 54 (5.4%) 2.212 (1.203–4.232) 0.0129
To different commune 461 (23.1%) 290 (29.0%) 171 (17.1%) 0.9255 (0.6048–1.408) 0.7193
International 109 (5.5%) 70 (7.0%) 39 (3.9%) 2.563 (0.9462–8.217) 0.0821
Non-work 508 (25.4%) 330 (33.0%) 178 (17.8%) 0.959 (0.6382–1.446) 0.8407
Work only 348 (17.4%) 217 (21.7%) 131 (13.1%) 3.489 (2.705–4.510) < 0.0001
Number of nights away* 1 (0–9.5) 6 (0–12) 0 (0–3) 1.353 (0.9357–1.957) 0.108
Visit forest 995 (49.8%) 640 (64.0%) 355 (35.5%) 2.759 (0.9833–9.928) 0.078
Live in forest 55 (2.8%) 35 (3.5%) 20 (2.0%) 1.014 (1.001–1.027) 0.0357
Days in the forest* 1 (0–5) 2 (0–7) 0 (0–3) 0.9753 (0.9568–0.9940) 0.01
  1. *Median (IQR)