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Classification of the MCM datasets for 8 West African countries |
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| Very low IR < 7.2 |
Low 7.2 < IR < 18.9 |
High 18.9 < IR < 41.3 |
Very high IR > 41.3 |
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| 1 |
Benin |
4 |
15 |
9 |
5 |
| 2 |
Burkina Faso |
0 |
1 |
18 |
15 |
| 3 |
Chad |
5 |
9 |
9 |
11 |
| 4 |
Mali |
10 |
12 |
4 |
6 |
| 5 |
Niger |
0 |
1 |
9 |
20 |
| 6 |
Nigeria |
19 |
9 |
2 |
1 |
| 7 |
Sudan |
18 |
2 |
6 |
4 |
| 8 |
Togo |
8 |
14 |
7 |
2 |
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Classification of the meningitis dataset (34 annual values from 1966 to 1999 for 8 West African countries) into four categories according to log-Incidence Rate (log-IR) thresholds. Since the log-IR are normally distributed, the classification has been done according to quartile groups which divide the sorted data set into four equal parts, so that each part represents 1/4 of the sampled population. The IR range of the four resulting categories is shown in the first row. | |||||
Yaka et al. International Journal of Health Geographics 2008 7:34 doi:10.1186/1476-072X-7-34 |
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