Table 2 Month-specific total number of non-national births, multiple sclerosis births, estimates of expected relative incidence, observed relative incidence (ORI) and ORI ranks: Kuwait, January 1, 1950 – April 30, 2013
Months | Non-national births (n = 997269) | MS births (n = 237) | Expected relative incidence (×103) | Observed relative incidence (×103) | ORI rank |
|---|---|---|---|---|---|
Jan | 86425 | 18 | 0.020184 | 0.017689 | 5 |
Feb | 74731 | 22 | 0.018231 | 0.022583 | 10 |
Mar | 81849 | 17 | 0.020184 | 0.01764 | 4 |
Apr | 80364 | 28 | 0.019533 | 0.028637 | 12 |
May | 82865 | 15 | 0.020184 | 0.015374 | 2 |
June | 80451 | 14 | 0.019533 | 0.014303 | 1 |
July | 84331 | 17 | 0.020184 | 0.017121 | 3 |
Aug | 83502 | 20 | 0.020184 | 0.020342 | 8 |
Sept | 83339 | 20 | 0.019533 | 0.019725 | 7 |
Oct | 86868 | 24 | 0.020184 | 0.023465 | 11 |
Nov | 84524 | 22 | 0.019533 | 0.021393 | 9 |
Dec | 88020 | 20 | 0.020184 | 0.019298 | 6 |