Database of National Health Insurance in Taiwan Seasonal variation of chickenpox
Seasonal variation of chickenpox in Taiwan estimated by NHIR database
Po-Yuan Wu Yu-Chuan Li Po-yuan Wu a, Yu-Chuan Li a
Institute of Medical Informatics, Taipei Medical University
a graduate institute of medical informatics, Taipei medial university
Abstract
In order to determine the seasonal variation of chickenpox in Taiwan, we analyzing data from NHIR database in year 2000. The entire patient suffered from chickenpox in NHI date base are included (N = 165719) and divided to northern, center,
southern and eastern part of Taiwan by geographic locations. In all geographic locations except off-shore Island, the peak is in January and lowest incidence rate peak in September and July. Chi-Square Test for Equal Proportions show seasonal variation of chickenpox in Taiwan (P <.0001 ). We also found there are cyclic pattern between total patient numbers and days in all the year 2000, about 7 days a cycle Keywords: chickenpox, seasonal variation, incidence rate, temperature
