Controls | Cases | % Cases | |
---|---|---|---|
January | 101 | 68 | 40.2 |
February | 99 | 57 | 36.5 |
March | 108 | 67 | 38.3 |
April | 100 | 67 | 40.1 |
May | 117 | 66 | 36.1 |
June | 112 | 51 | 31.3 |
July | 96 | 55 | 36.4 |
August | 102 | 68 | 40.0 |
September | 95 | 57 | 37.5 |
October | 103 | 61 | 37.2 |
November | 99 | 51 | 34.0 |
December | 84 | 55 | 39.6 |
Total | 1216 | 723 | 37.3 |
χ2= 5.53; p = 0.9. Not significant.