Table 4 The status of asthma relief drug usage among children in different age groups, regions and city levels
| Â | Age groups | Â | Regions | Â | City levels | Â | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Children younger than 3Â years old | Preschool children | School-age children | P | East China | Central China | West China | P | 1st Tier | 2nd Tier | 3rd Tier | 4th and 5th Tier | P | |
(N = 439) | (N = 967) | (N = 1062) | (N = 1900) | (N = 223) | (N = 345) | (N = 601) | (N = 1268) | (N = 195) | (N = 314) | ||||
SABA | |||||||||||||
Inhalation | 255 (58.09%) | 470 (48.60%) | 329 (30.98%) |  < .0001 | 951(50.05%) | 59(26.46%) | 44(12.75%) |  < .0001 | 179(29.78%) | 702(55.36%) | 65(33.33%) | 108(34.39%) |  < .0001 |
Oral | 47 (10.71%) | 327 (33.82%) | 10 (0.94%) |  < .0001 | 144(7.58%) | 58(26.01%) | 21(6.09%) |  < .0001 | 36(59.90%) | 83(6.55%) | 35(17.95%) | 69(21.97%) |  < .0001 |
OCS | 158 (36.00%) | 270 (27.92%) | 217 (20.43%) |  < .0001 | 406(21.37%) | 130(58.30%) | 109(31.59%) |  < .0001 | 67(11.15%) | 291(22.95%) | 110(56.41%) | 177(56.37%) |  < .0001 |
SAAC | 327 (74.49%) | 605 (62.56%) | 431 (40.58%) |  < .0001 | 1228(64.63%) | 64(28.70%) | 71(20.58%) |  < .0001 | 361(60.07%) | 819(64.59%) | 97(49.74%) | 86(27.39%) |  < .0001 |
Theophylline | |||||||||||||
Oral | 9 (2.05%) | 27 (2.79%) | 31 (2.92%) | 0.63 | 49(2.58%) | 10(4.48%) | 8(2.32%) | 0.281 | 3(0.50%) | 19(1.50%) | 22(11.28%) | 23(7.32%) |  < .0001 |
Intravenous | 60 (13.67%) | 113 (11.69%) | 109 (10.26%) | 0.166 | 85(4.47%) | 60(26.91%) | 137(39.71%) |  < .0001 | 2(0.33%) | 72(5.68%) | 49(25.13%) | 159(50.64%) |  < .0001 |