Table 3 Linear regression coefficient of each factor with longevity in regression analysis. Year Sea Fish Humidity Degree T-Se Altitude SD of Temperature WS-Se Freshwater Food Meat 2000 0.331 ** 0.219 ** 0.255 ** 0.114 ** 0.252 ** 0.161 ** 0.015 * 0.011 2010 0.304 ** 0.287 ** 0.217 ** 0.212 ** 0.195 ** 0.092 ** 0.042 ** 0.017 * ** Correlation significant at p < 0.01 level; * Correlation significant at p < 0.05 level.