Table 5: In-hospital medical costs.

VariableGroup 𝑁 𝑥 ± 𝑠 𝑀 𝑍 𝑃

Total charges (¥)Intervention 19748047.3 ± 18929.444198.71.830.067
Control 40552866.0 ± 35404.446157.8
Total charges adjusted by price index (¥)
Intervention 19746365.7 ± 18266.942651.72.940.003
Control40552866.0 ± 35404.446157.8