Table 3 Indicators of monthly AQI

Number of basic information median (IQR)

8.9 (0.2)

9.0 (0)

 < 0.001

Evaluation rate median (IQR), %

74.7 (6.8)

102.2 (2.7)

 < 0.001

Insufficient analgesia treatment time median (IQR), min

69,138.8 (122,135.2)

140.5 (16,567.8)

0.019

Bubble incidence median (IQR), %

0.2 (0.6)

0.2 (0.3)

0.706

Rate of not power off after pump withdrawal median (IQR), %

0.8 (1.0)

0.6 (0.9)

0.550

Rate of leaving service area median (IQR), %

8.5 (7.4)

6.2 (5.4)

0.048

Average pressing times median (IQR)

3.1 (1.1)

2.1 (0.8)

 < 0.001

Insufficient analgesia rate median (IQR), %

1.2 (0.8)

0.9 (0.6)

 < 0.001

Poor analgesia rate median (IQR), %

0.6 (1.8)

1.6 (1.1)

 < 0.001

Blockage rate mean (SD), %

17.5 (4.0)

24.2 (3.9)

 < 0.001

Drug utilization rate mean (SD), %

72.1 (5.0)

64.0 (4.4)

 < 0.001