| Table 1. Chi-square test of independence of the age group with the % DFI Normal-Abnormal. | |||
| Age | %DFI | p-value | |
|---|---|---|---|
| Normal | Abnormal | ||
| <30 (n=200) | 170 (85%) | 30 (15%) | 0.000 |
| 31-40 (n=773) | 586 (76%) | 187 (24%) | |
| 41-50 (n=420) | 282 (67%) | 138 (33%) | |
| >50 (n=119) | 67 (56%) | 52 (44%) | |