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Form Administration Instructions
The range of
values for questions 5 through 10 are all 0 to 3.
Questions 1
through 9 are not allowed to be missing except as noted below. If these questions are missing then any
scores calculated using missing questions are also missing. Thus it is important to make sure that all
questions 1 through 9 have been answered.
In the event that
a range is given for an answer (for example, ‘30 to 60’ is written as the
answer to Q2, minutes to fall asleep), split the difference and enter 45.
Reference
Buysse DJ,
Reynolds CF, Monk TH, Berman SR, Kupfer DJ:
The Pittsburgh Sleep Quality Index:
A new instrument for psychiatric practice and research. Psychiatry Research 28:193-213, 1989.
Scores – reportable in publications
On May 20, 2005,
on the instruction of Dr. Daniel J. Buysse, the scoring of the PSQI was changed
to set the score for Q5J to 0 if either the comment or the value was
missing. This may reduce the DISTB score
by 1 point and the PSQI Total Score by 1 point.
PSQIDURAT DURATION OF SLEEP
IF Q4 > 7, THEN set
value to 0
IF Q4 < 7 and > 6, THEN
set value to 1
IF Q4 < 6 and > 5, THEN
set value to 2
IF Q4 < 5, THEN set value to 3
Minimum Score = 0 (better); Maximum Score =
3 (worse)
PSQIDISTB SLEEP
DISTURBANCE
IF Q5b + Q5c +
Q5d + Q5e + Q5f + Q5g + Q5h + Q5i + Q5j (IF Q5JCOM is null or Q5j is null, set
the value of Q5j to 0) = 0, THEN set value to 0
IF Q5b + Q5c + Q5d + Q5e +
Q5f + Q5g + Q5h + Q5i + Q5j (IF Q5JCOM is null or Q5j is null, set the value of
Q5j to 0) > 1 and < 9, THEN set value to 1
IF Q5b + Q5c + Q5d + Q5e +
Q5f + Q5g + Q5h + Q5i + Q5j (IF Q5JCOM is null or Q5j is null, set the value of
Q5j to 0) > 9 and < 18, THEN set value to 2
IF Q5b + Q5c + Q5d + Q5e +
Q5f + Q5g + Q5h + Q5i + Q5j (IF Q5JCOM is null or Q5j is null, set the value of
Q5j to 0) > 18, THEN set value to 3
Minimum Score = 0 (better); Maximum Score =
3 (worse)
PSQILATEN SLEEP LATENCY
First,
recode Q2 into Q2new thusly:
IF Q2 >
0 and < 15, THEN set value of Q2new to 0
IF Q2 > 15 and
< 30, THEN set value of Q2new to 1
IF Q2 > 30 and
< 60, THEN set value of Q2new to 2
IF Q2 > 60,
THEN set value of Q2new to 3
Next
IF Q5a + Q2new = 0, THEN set
value to 0
IF Q5a + Q2new >
1 and < 2, THEN set value to 1
IF Q5a + Q2new >
3 and < 4, THEN set value to 2
IF Q5a + Q2new > 5
and < 6, THEN set value to 3
Minimum Score = 0 (better); Maximum Score =
3 (worse)
PSQIDAYDYS
DAY DYSFUNCTION DUE
TO SLEEPINESS
IF Q8 + Q9 = 0, THEN set
value to 0
IF Q8 + Q9 > 1 and <
2, THEN set value to 1
IF Q8 + Q9 > 3 and <
4, THEN set value to 2
IF Q8 + Q9 > 5 and <
6, THEN set value to 3
Minimum Score = 0 (better); Maximum Score =
3 (worse)
PSQIHSE SLEEP EFFICIENCY
Diffsec
= Difference in seconds between day and time of day Q1 and day Q3
Diffhour = Absolute value of diffsec / 3600
newtib =IF diffhour > 24, then
newtib = diffhour – 24
IF diffhour < 24, THEN
newtib = diffhour
(NOTE, THE
ABOVE JUST CALCULATES THE HOURS BETWEEN GNT (Q1) AND GMT (Q3))
tmphse = (Q4 / newtib) * 100
IF tmphse > 85, THEN set value to 0
IF tmphse < 85 and > 75, THEN set value to 1
IF tmphse < 75 and > 65, THEN set value to 2
IF tmphse < 65, THEN set value to 3
Minimum Score = 0 (better); Maximum Score =
3 (worse)
PSQISLPQUAL OVERALL
SLEEP QUALITY
Q6
Minimum Score = 0 (better); Maximum Score =
3 (worse)
PSQIMEDS NEED MEDS TO SLEEP
Q7
Minimum Score = 0 (better); Maximum Score =
3 (worse)
PSQI TOTAL
DURAT + DISTB + LATEN + DAYDYS + HSE +
SLPQUAL + MEDS
Minimum Score = 0 (better); Maximum Score =
21 (worse)
Interpretation: TOTAL
< 5 associated with good sleep quality
TOTAL > 5 associated with poor sleep
quality
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