Table 1.

Overview of seven-phase SuSI development process.

Phase	Purpose
1. Systematic literature Review.	To conceptualize sleep satisfaction and identify extant sleep satisfaction scales, items, response and scoring systems that may be used or adapted. To provide similarities and differences between sleep satisfaction and sleep quality.
2. Interviews with SuSI target population.	To establish how target population conceptualizes sleep satisfaction and whether this conceptualization matches the literature’s; (b) to provide evidence for the SuSI’s content and face validity.
3. Synthesis of literature review and interview findings.	To (a) ensure that SuSI’s sleep satisfaction definition/ conceptualization is both in line with prior evidence and understood by target population; (b) generate SuSI candidate sleep satisfaction domains and items; and (c) develop a user’s guide.
4. Pre-testing (cognitive interviewing and expert validation).	To ensure that (a) items are clear and relevant to sleep satisfaction/sleep satisfaction domains; (b) items are understood in the way they were intended to; and (c) user guide is understood and useful.
5. Pilot-testing (SuSI field administration).	To collect data to determine the SuSI’s dimensionality, factor/item structure, reliability and validity.
6. Scale evaluation.	To analyze pilot-testing data to determine SuSI, dimensionality, factor/item structure, reliability and validity
7. Refinement.	To finalize the SuSI and its user guide based on data collected from previous phases.