| Age | X2 Test | ||||
| Understanding of prescribed medications | Aged 65 years or below | Early-stage elderly individuals | Late-stage elderly individuals aged 75 years or over | ||
| Yes | Frequency (%) | 41 (91.1%) | 37 (71.2%) | 42 (79.2%) | P = 0.049 |
| Adjusted residual | 2.2 | −2 | −0.2 | ||
| No | Frequency (%) | 4 (8.9%) | 15 (28.8%) | 11 (20.8%) | |
| Adjusted residual | −2.2 | 2 | 0.2 | ||