Diagnostic values of the traditional and revised dengue case definition signs and symptoms, cohort study.

aChildren under 4 years were excluded from the analysis. N for negative cases = 2,485; N for positive cases = 441.bSigns and symptoms associated with dengue (pc23 with missing data among negative cases (N = 2,908).a. 本次分析排除了4岁以下儿童。阴性病例的样本量（N）为2485，阳性病例的样本量（N）为441。b. 与登革热相关的体征与症状中，pc23指标在阴性病例内存在数据缺失，该类阴性病例的样本量为2908。