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Age Distribution of the Cases
| Study cohort | All cases, years |
Positive cases, years |
P | ||
|---|---|---|---|---|---|
| Mean | SD | Mean | SD | ||
| All | 20.28 | 1.31 | 19.64 | 1.11 | <0.001 |
| Male | 20.32 | 1.32 | 19.75 | 1.20 | <0.001 |
| Female | 20.25 | 1.30 | 19.54 | 1.02 | <0.001 |
Two-sided unpaired t-tests were conducted between the positive cases and all cases for all sexes, male only or female only.
