Table 2 Medical resource utilization by asthma severity

Outpatient visits

 Rate (%)

3,798 (83.9%)

2,002(91.0%)

234(44.6%)

6,034(83.2%)

0.000

 Frequency (SD, all patients )

2.2 (3.2)

2.8 (3.7)

1.3 (2.4)

2.3 (3.3)

0.0001

 Frequency (SD, patients who had the visits)

2.6(3.3)

3.1(3.8)

2.8(3.0)

2.8(3.5)

0.0001

 Duration (day)

1.0(0.0)

1.0(0.0)

1.0(0.0)

1.0(0.0)

1.0000

Emergency room visits

 Rate (%)

493 (10.9%)

146 (6.6%)

39 (7.4%)

678 (9.4%)

0.000

 Frequency (SD, all patients)

0.2 (0.7)

0.1(0.9)

0.1(0.3)

0.2 (0.7)

0.0123

 Frequency (SD, patients who had the visits)

1.6 (1.3)

1.9 (3.1)

1.1 (0.3)

1.6 (1.8)

0.1626

 Duration (day)

1.1(0.8)

1.1 (1.1)

2.9 (3.7)

1.2 (1.2)

0.0296

Hospital admission

 Rate (%)

487 (10.8%)

172 (7.8%)

299 (57.0%)

958 (13.2%)

0.000

 Frequency (SD, all patients)

0.1 (0.4)

0.1 (0.3)

0.6 (0.7)

0.1 (0.4)

0.0001

 Frequency (SD, patients who had the admission)

1.1 (0.4)

1.1 (0.4)

1.1 (0.6)

1.1 (0.5)

0.8623

 Duration (day)

9.9 (4.7)

10.1 (6.7)

11.5 (5.9)

10.4 (5.5)

0.0001

Medication

 Utilization rate of OCS (%)

117 (2.6%)

33 (1.5%)

110 (21.0%)

260 (3.6%)

0.0000

 Utilization rate of ICS + LABA (%)

278 (6.1%)

1,902 (86.5%)

436 (83.1%)

2,616 (36.1%)

0.0000

Diagnosis

 Detection rate of total IgE (%)

49 (1.1%)

22 (1.0%)

43 (8.2%)

114 (1.6%)

0.000