Table 1.

Variables and ranges used for calculating disability-adjusted life years (DALYs) caused by dengue illness in Nicaragua, 1996–2010^*

Variable	Value	Range	Distribution
Age-corrected constant, C26	0.16243	N/A	N/A
Age-weighting parameter, b26	0.04	N/A	N/A
Discount rate, r26	0.03	N/A	N/A
Disability weight, D for DF and DHF21,26	0.81	0.6–0.92	Triangular
Disability weight, D for mostly asymptomatic16	0	0–0.22	Triangular
Duration of illness (DF)26	7 days	4–10 days	Triangular
Duration of illness (DHF)26	15 days	10–20 days	Triangular
Expansion factor of DF (epidemic)9,27,28	10	8–14	Triangular
Expansion factor of DF (endemic)9,27,28	20	18–25	Triangular
Expansion factor of DHF9,27,28	6	5–10	Triangular
Asymptomatic to symptomatic ratio29	10	8–12	Triangular
Life expectancy at birth30	72.3 years	N/A	N/A

^*DF = dengue fever; DHF = dengue hemorrhagic fever; N/A = not available.