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Table 2 Correlation coefficient matrix

From: Health expenditure efficiency in rural China using the super-SBM model and the Malmquist productivity index

Correlation Coefficient PPP EXP NC NTH DA DTH LDT NTH BED NV NI UB ADH
PPP 1.000 .561a .403a .716a .337a .169a .216a .195a .492a .223a -.215a -.209a .207a
EXP 0.561a 1.000 .355a .703a .294a -.384a -.143b -.196a -.117b -.204a -.136b -.216a -.204a
NC 0.403a .355a 1.000 .532a .741a -.185a .215a 0.039 .131b -.229a -0.024 -.233a -.200a
NTH 0.716a .703a .532a 1.000 .320a 0.041 -0.062 -.210a 0.098 .187a -.274a -.314a .150a
DA .337a .294a .741a .320a 1.000 -.197a .166a 0.034 .113b -.325a 0.078 -.135b -.289a
DTH .169a -.384a -.185a 0.041 -.197a 1.000 -0.037 0.039 .351a .660a -0.040 0.090 .587a
LDT .216a -.143b .215a -0.062 .166a -0.037 1.000 .887a .598a -.215a 0.111 -0.023 -.141b
NTH .195a -.196a 0.039 -.210a 0.034 0.039 .887a 1.000 .636a -.185a .246a 0.080 -.130b
BED .492a -.117b 0.131b 0.098 .113b .351a .598a .636a 1.000 .262a .160a .164a .319a
NV .223a -.204a -.229a .187a -.325a .660a -.215a -.185a .262a 1.000 -0.103 .294a .958a
NI -.215a -.136b -0.024 -.274a 0.078 -0.040 0.111 .246a .160a -0.103 1.000 .774a -.115b
UB -.209a -.216a -.233a -.314a -.135b 0.090 -0.023 0.080 .164a .294a .774a 1.000 .326a
ADH .207a -.204a -.200a .150a -.289a .587a -.141b -.130b .319a .958a -.115b .326a 1.000
  1. asignificant at the 5% level; b significant at the 10% level