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Table 2

The p values of Spearman's rho and Kendall's tau for SDI and SDI

3 Month6 Month9 Month12 Month24 MonthFallWinterSpringSummer
SPI 
 Kendall's tau 
  R −0.025 −0.031 −0.044 −0.049 −0.120** 0.155 −0.131 0.049 0.283* 
  p value 0.207 0.155 0.076 0.058 0.164 0.241 0.663 0.030 
 Spearman's rho 
  R −0.038 −0.046 −0.067 −0.082* −0.170** 0.2 −0.17 0.063 0.378* 
  p value 0.205 0.162 0.075 0.038 0.223 0.301 0.702 0.018 
SDI 
 Kendall's tau 
  R −0.188** −0.187** −0.177** −0.170** −0.254** −0.174 −0.077 −0.163 −0.287** 
  p value 0.059 0.245 0.072 0.005 
 Spearman's rho 
  R −0.280** −0.282** −0.281** −0.283** −0.386** −0.276* −0.132 −0.257 −0.413** 
  p value 0.044 0.211 0.057 0.004 
3 Month6 Month9 Month12 Month24 MonthFallWinterSpringSummer
SPI 
 Kendall's tau 
  R −0.025 −0.031 −0.044 −0.049 −0.120** 0.155 −0.131 0.049 0.283* 
  p value 0.207 0.155 0.076 0.058 0.164 0.241 0.663 0.030 
 Spearman's rho 
  R −0.038 −0.046 −0.067 −0.082* −0.170** 0.2 −0.17 0.063 0.378* 
  p value 0.205 0.162 0.075 0.038 0.223 0.301 0.702 0.018 
SDI 
 Kendall's tau 
  R −0.188** −0.187** −0.177** −0.170** −0.254** −0.174 −0.077 −0.163 −0.287** 
  p value 0.059 0.245 0.072 0.005 
 Spearman's rho 
  R −0.280** −0.282** −0.281** −0.283** −0.386** −0.276* −0.132 −0.257 −0.413** 
  p value 0.044 0.211 0.057 0.004 

*Correlation is significant at the 0.05 intervals.

**Correlation is significant at the 0.01 intervals.

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