Pittsburgh Sleep Quality Index (PSQI)

Measure subjective sleep quality over the past month using the Pittsburgh Sleep Quality Index (PSQI). Seven component scores are summed; a global score >5 indicates poor sleep quality with sensitivity 89.6% and specificity 86.5%.

Data set — comma or newline separated
Statistical Results — n = 8
Count (n)8
Sum (Σx)40
Min2
Max9
Range7
Q14
Q35.5
IQR1.5
Mean (μ)5
Median4.5
Mode4
Pop. Variance (σ²)4
Pop. Std Dev (σ)2
Sample Variance (s²)4.571428571
Sample Std Dev (s)2.138089935
Skewness0.65625
Excess Kurtosis-0.21875
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How It Works

Measure subjective sleep quality over the past month using the Pittsburgh Sleep Quality Index (PSQI). Seven component scores are summed; a global score >5 indicates poor sleep quality with sensitivity 89.6% and specificity 86.5%

Each component has a specific meaning:

  • Pittsburgh Sleep Quality Index — The pittsburgh sleep quality index recorded for the scenario being assessed.

Note: Interpret the psqi score result against the thresholds and context described above.

How to Use

Enter the Pittsburgh Sleep Quality Index for the scenario you are assessing. Measure subjective sleep quality over the past month using the Pittsburgh Sleep Quality Index (PSQI). Seven component scores are summed; a global score >5 indicates poor sleep quality with sensitivity 89.6% and specificity 86.5%. Use the psqi score result to inform your calculation.

Frequently Asked Questions