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The chi-square statistic is 94.9796. The p-value is < 0.00001. The result is significant at p < .05.
| Year | Total sample tested | NSI positive | IgM positive | Total |
|---|---|---|---|---|
| 2016 | 251 | 35 (13.94%) | 18 (7.17%) | 53 (21.11%) |
| 2017 | 1,286 | 24 (1.87%) | 181 (14.07%) | 205 (15.94%) |
| 2018 | 152 | 4 (2.63%) | 10 (6.58%) | 14 (9.21%) |
| Total | 1,689 | 63 (3.73%) | 209 (12.37%) | 272 (16.10%) |
