|  |  | Absolute Relative Bias†| |||||
---|---|---|---|---|---|---|---|---|
 |  |  | Gamma | Nonparametric | Daily-confirmed | |||
Year | Date | Positive cases | Median | (IQR) | Median | (IQR) | Median | (IQR) |
2006 | Jun. 1~Jul. 5 | 3 | 440.3% | (57.8%) | 363.6% | (50.5%) | 100.0% | (0%) |
 | Jul. 6*~Jul. 31 | 50 | 5.7% | (13.2%) | 8.5% | (10.9%) | 67.7% | (19.1%) |
 | Aug. 1~Aug. 31 | 108 | 5.8% | (11.2%) | 5.3% | (8.7%) | 30.1% | (9.8%) |
 | Sep. 1~Sep. 30 | 173 | 6.9% | (2.2%) | 4.0% | (1.7%) | 21.7% | (3.0%) |
 | Oct. 1~Oct. 31 | 291 | 6.7% | (5.6%) | 5.9% | (5.8%) | 17.3% | (2.9%) |
 | Nov. 1~Nov. 30 | 230 | 1.5% | (1.2%) | 2.3% | (1.3%) | 11.9% | (6.0%) |
 | Dec. 1~Dec. 31 | 108 | 1.7% | (1.5%) | 3.0% | (1.9%) | 4.7% | (5.3%) |
2007 | Jan. 1~Jan. 31 | 13 | 1.4% | (0.6%) | 3.9% | (0.3%) | 0.8% | (0.8%) |
 | Feb. 1~Feb. 28 | 0 | 0.9% | (0.2%) | 3.7% | (0.2%) | - |  |
 | Mar. 1~Mar. 31 | 3 | 0.5% | (0.3%) | 3.5% | (0.4%) | 0.1% | (0.2%) |
 | Apr. 1~Apr. 30 | 0 | 0.6% | (0.3%) | 3.9% | (0.3%) | - |  |