Validation of the Single-item Sleep Quality Scale

"For the pilot testing, each patient will complete the pre-final version of the SQS.~The patients involved in the field study will have to fill in the SQS twice before treatment, one week apart, to assess reproducibility of the scale and a third time at 3 months after treatment (surgical or conservative) to assess the responsiveness of the scale."

The patients involved in the field test will have to fill in the PSQI twice before treatment, one week apart, to assess reproducibility of the scale and a third time at 3 months after treatment (surgical or conservative) to assess the responsiveness of the scale.