Fig. 3From: The impact of the national volume-based procurement policy on the use of policy-related drugs in Nanjing: an interrupted time-series analysisMonthly trends in the DDDc of bid-winning and alternative products. A The trend in the DDDc of bid-winning drugs and non-winning drugs under the same generic name, B The trend in the DDDc of alternative drugs at different degrees (under different generic names)Back to article page