Table 2 Univariate and multivariable interval censored proportional hazards model regression estimates of relative risk of being confirmed negative for ZIKV in plasma.
Selected baseline factors | Univariate model | Multivariable model | ||
|---|---|---|---|---|
Univariate HR (95% CI) | Chi-sq p value | Adjusted HR (95% CI) | Chi-sq p value | |
Sex | – | – | ||
Male | 1.00 | |||
Female | 1.04 (0.79, 1.38) | 0.78 | ||
Age group | – | – | ||
≤ 35 | 1.00 | |||
> 35 | 0.93 (0.72, 1.20) | 0.58 | ||
Education level | ||||
Secondary or lower | 1.00 | 1.00 | ||
Post-secondary | 0.74 (0.55, 0.98) | 0.03 | 0.72 (0.54, 0.96) | 0.023 |
BMI category (kg/m2) | – | – | ||
Normal weight (18.5–24.99) | 1.00 | |||
Overweight or obese (≥ 25.0) | 0.93 (0.70, 1.23) | 0.61 | ||
Household members (excluding self) | – | – | ||
< 3 | 1.00 | |||
≥ 3 | 1.09 (0.82, 1.44) | 0.56 | ||
Fever today or past 30 days | – | – | ||
(Yes vs No) | 1.29 (0.91, 1.81) | 0.15 | ||
Rash today or past 30 days | – | – | ||
(Yes vs No) | 1.90 (0.61, 5.97) | 0.27 | ||
Pruritus today or past 30 days | – | – | ||
(Yes vs No) | 1.26 (0.74, 2.16) | 0.39 | ||
Non purulent conjunctivitis today or past 30 days | – | – | ||
(Yes vs No) | 1.18 (0.89, 1.57) | 0.26 | ||
Joint pain today or past 30 days | ||||
(Yes vs No) | 1.33 (0.96, 1.84) | 0.09 | 1.38 (0.99, 1.91) | 0.06 |
Periarticular edema today or past 30 days | – | – | ||
(Yes vs No) | 1.19 (0.91, 1.57) | 0.21 | ||
Yellow fever vaccination? | – | – | ||
(Yes vs No) | 0.99 (0.61, 1.60) | 0.97 | ||
