Time frame: Change from baseline, immediately after the intervention with the different manual therapy protocols; and at 1, 2 and 3 months of follow-up after intervention
The Pittsburgh Sleep Quality Index (PSQI) consists of 19 self-administered questions and 5 questions assessed by the patient's partner or roommate (if available). Only the self-administered questions are included in the score.
The PSQI, developed by the Department of Psychiatry at the University of Pittsburgh in 1988, is a questionnaire that assesses both qualitative and quantitative aspects of sleep quality in the month prior to its administration.
It shows that subjective sleep quality, duration, efficiency, disturbances and daytime dysfunction have better quality in those with moderate and severe impairment; while in those with average and higher performance, higher sleep latencies are observed. The total score is 21, and scores above 5 indicate significant sleep disturbance.