Table 12 Results of parametric/non-parametric analysis

Policy effect

Round of NCDP***

0.0049

Drug market competition

Price reduction of bid-winning brands

0.0995

Average price reduction of bid-non-winning brands***

0.0004

Indication type**

0.0154

Number of drugs of the same indication selected before

0.1912

Number of drugs of the same indication selected after

0.9584

Previous drug utilization of the medical institution

Number of prescriptions***

0.0002

Whether brand-name drugs were used before policy intervention

0.1151

Whether bid-winning brands were used before policy intervention

0.3390