Table 3. Risk factors from a univariable logistic regression model.

Sample population was all individuals who were seronegative in 2013 (n = 97), and outcome was defined as seroconversion as measured by ELISA. Number indicates total individuals with a given characteristic.

Variable	Number	Odds ratio	p value
Demographic characteristics
Age under 20	61	0.49 (0.21–1.13)	0.10
Male	49	0.81 (0.36–1.84)	0.62
iTaukei ethnicity	85	1.33 (0.39–5.32)	0.66
Environmental factors present
Mosquitoes	90	4.19 (0.68–80.85)	0.19
Used car tires	61	1.80 (0.77–4.42)	0.18
Open water container(s)	61	1.49 (0.64–3.58)	0.37
Air conditioning	23	0.46 (0.15–1.26)	0.15
Blocked drains	53	1.04 (0.46–2.38)	0.92
Location
Urban or peri-urban	50	2.18 (0.95–5.11)	0.07
Health seeking behaviour
Fever in preceding 2 years	20	2.94 (1.08–8.38)	0.04
Visited doctor with fever in preceding 2 years	16	3.15 (1.06–10.13)	0.04
Household member visited doctor with fever in preceding 2 years	9	2.08 (0.52–8.94)	0.30