Table 1. Result of ASST and SPT to HDM in 862 patients with CSU.
| Age groups(yr) | No. of patients | ASST reaction | SPT reaction | ||||||
| 1+ No. (%) | 2+ No. (%) | 3+ No.(%) | Total No.(%) | 1+ No.(%) | 2+ No.(%) | 3+ No.(%) | Total No.(%) | ||
| ≤20 | 120 | 7(5.8%) | 17(17.2) | 16(13.3) | 40(33.3) | 11(9.2) | 13(10.8) | 17(14.2) | 41(34.2) |
| 21–29 | 172 | 15(8.7) | 32(18.6) | 32(18.6) | 79(45.9) | 14(8.1) | 21(12.2) | 15(8.7) | 50(29.1) |
| 30–39 | 259 | 33(12.7) | 52(20.1) | 50(19.3) | 135(52.1) | 11(4.2) | 12(4.6) | 7(2.7) | 30/(11.6) |
| 40–49 | 195 | 19(9.7) | 46(23.6) | 27(13.8) | 92(47.2) | 8(4.1) | 5(2.6) | 3(1.5) | 16(8.2) |
| ≥50 | 116 | 13(11.2) | 24(20.7) | 16(13.8) | 53(45.7) | 8(6.9) | 6(5.2) | 2(1.7) | 16(13.8) |
| Total | 862 | 87(10.1) | 171(19.8) | 141(16.4) | 399(46.3) | 52(6.0) | 57(6.6) | 44(5.1) | 153(17.7) |