a decreasing trendP < 0.001
A decreasing trend in mortality was observed in both the groups (CAI: -0.53%/year and NI: -0.72%/year, P < 0.001).
A decreasing trend in mortality was observed in both the groups (CAI: -0.53%/year and NI: -0.72%/year, P < 0.001).
Sixth, although this study included more than 80% hospitals in Japan that were members of the DPC system, the number of eligible hospitals changed over the 10-year period, showing an increasing trend (Supplementary file; Table S 4 ).