Fig. 7From: Measuring dengue illness intensity: Development and content validity of the dengue virus daily diary (DENV-DD)Note: Shaded groups denote conceptual categories of symptom items. Items which are unshaded do not fall into specific symptom concepts. *ObsRO concept may not be directly observable and is unlikely to be articulated clearly to caregivers from very young children. These concepts include a ‘I don’t know’ response option for caregivers within the DENV-DD ObsROHypothesized conceptual framework of the DENV-DD ObsRO. Back to article page