JMA Journal

Figure 1. Distribution of the number of prefectural governments by the number of numerical metrics
There were four prefectures with 0 numerical metrics and one with a maximum of 19.
The median value was 4 (IQR: 3-6.5), and almost all prefectural governments had fewer than 10 measures.

Figure 2. Distribution of the prefecture’s metric classification method
Two prefectural governments used a contingency table of health care phase classification and SPO classification, seven used only SPO classification, and four used only health care phase classification.
Six prefectural governments had their own unique classification. Twenty-four prefectural governments did not indicate any classification of their own numerical metrics.