Table 2. Effect of symptom intensity on reporting of major activity change for participants tested for heterogeneity of dengue illness in community-based prospective study, Iquitos, Peru.
| Symptom | Odds ratio (95% CI)* | Δ-AIC† |
|---|---|---|
| Malaise | 1.36 (1.25–1.48) | 42.1 |
| Weakness | 1.48 (1.36–1.63) | 35.8 |
| Fever | 1.28 (1.19–1.38) | 20.8 |
| Abdominal | 1.34 (1.22–1.48) | 9.9 |
| Body pain | 1.32 (1.22–1.43) | 9.1 |
| Headache | 1.27 (1.17–1.37) | 9.0 |
| Chills | 1.31 (1.21–1.43) | 3.3 |
| Muscle pain | 1.25 (1.15–1.35) | 2.7 |
| Joint pain | 1.23 (1.13–1.34) | −0.0 |
| Retroorbital pain | 1.11 (1.03–1.2) | −0.1 |
| Sore throat | 1.02 (0.87–1.18) | −0.5 |
| Bone pain | 1.24 (1.15–1.36) | −1.4 |
*Shown is the increase in odds of reporting a major activity change when symptom intensity is increased by 1 point for each of the 12 symptoms. †Δ-AIC, difference in Akaike Information Criteria between models by using binary symptom presence versus symptom intensity (0–10) as a predictor of major activity change. A positive Δ-AIC favors the use of intensity over presence of symptom alone.