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Table 3 The models and multiple regression results

From: A new approach to estimate the heat thresholds at the county level in China

Name

Model formula

Adjusted R2

AIC

Model 1

RR ~ f1(AFT)

0.74

− 362

Model 2

RR ~ f1(AFT) + f2(Latitude) + f3(GDP/capita) + f4(Proportion of elderly population)

0.74

− 361

  1. AIC Akaike information criterion
  2. f1 is a power function, f2, … f4 are all linear functions