Table 2.

New algorithm method for CDT scoring based on the original criteria of Sunderland et al.¹⁰

You should mark with an “X” all the items present in the clock drawn
(a)	Presence of circle.		(j)	Presence of hour hand.
(b)	Presence of 12 numbers.		(k)	Presence of minute hand.
(c)	Numbers entered in the internal limit of the clock.		(l)	Minute hand proportionally larger than the hour hand.
(d)	Number in the correct ascending order.		(m)	One of the hands between 2 and 3.
(e)	Numbers in correct spatial position.		(n)	One of the hands on exactly 9.
(f)	Can you draw a straight vertical line between 12 and 6.		(o)	Wrong use of hands (digital or circling the numbers).
(g)	Can you draw a straight horizontal line between 3 and 9.		(p)	Some evidence of having understood that it is a clock.
(h)	Numbers not concentrated in one part of the clock.		(q)	Did not try or did not represent a clock.
(i)	Presence of two pointers.
Follow the algorithm for the score, but consider these three points initially
1. If the item “o” is checked, the score is 6 points.
2. If the item “p” is checked, the score is 2 points.
3. If the item “q” is checked, the score is 1 point.
The score will be 10-6 if the clock and the numbers are drawn correctly
10	Correct time (no “X” in the items: “o”, “p”, “q”).
9	Very mild disorder of hands (absence of “X” in at least one item: “l”, “m” or “n”).
8	Mild disorder of hands (absence of “X” in at least 2 items: “l”, “m”, “n”).
7	Severe disorder of hands (absence of “X” in the items: “l”, “m”, “n”).
6	Wrong use of hands (presence of “X” in item “o”).
The score will be 5-1 if the drawing of the clock and the numbers are incorrect
5	Numbers in reverse order or concentrated (no “X” in the items: “d” or “h”).
4	Numbers missing and located outside the boundary of the clock (no “X” in items: “b” and “c”).
3	Absence of hands (no “X” in the items: “i”, “j”, “k”).
2	Only some evidence of having understood that it is a clock (presence of “X” in item p).
1	Not tried or did not represent a clock (presence of “X” item in q).