Revised Hasegawa’s Dementia Scale (HDS-R)

The HDS-R consists of nine questions; question 1 on age (1 point), question 2 on the date (4 points), question 3 on place (2 points), question 4 on ability to repeat 3 familiar words (3 points), question 5 on 2 times of subtraction of 7 from 100 (2 points), question 6 on backwards repetition of 3 and 4 digits (2 points), question 7 on recall of the three words memorized in question 4 (6 points), question 8 on immediate recall of 5 object pictures shown and hidden (5 points), and question 9 on the listing of 10 vegetable names (5 points).^10,11 The full score on the HDS-R is 30 points. A score of 20 points or lower is considered to be an indicator of the presence of reduced function. To measure cognitive function accurately, both cooperation by the examinee and skill of examiner are necessary. Accordingly, an HDS-R manual was developed to standardize the skills of examiners.¹⁰