Table 2.

QATSDD Scores.

Domain	Mean Score (0-3)	Standard Deviation
All Studies (n = 24)
Explicit theoretical framework	1.6	0.7
Statement of aims/objectives in main body of report	2.3	0.9
Clear description of research setting	1.4	0.8
Evidence of sample size considered in terms of analysis	.25	0.8
Representative sample of target group of a reasonable size	1.0	0.8
Description of procedure for data collection	1.2	0.9
Rationale for choice of data collection tool(s)	0.2	0.6
Detailed recruitment data	.75	0.5
Fit between research question and method of analysis	1.8	1.3
Good justification for analytical method selected	0.2	0.7
Evidence of user involvement in design	0.1	0.4
Strengths and limitations critically discussed	1.2	0.8
Quantitative and Mixed Methods Studies (n = 16)
Statistical assessment of reliability and validity of measurement tool(s)	.75	1.1
Fit between stated research questions and method of data collection	1.8	0.5
Qualitative and Mixed Methods Studies (n = 12)
Fit between stated research question and format and content of data collection tool	0.9	0.5
Assessment of reliability of analytical process	0.0	0.0
Total Score (%, mean±SD): 32.9±16.1

Abbreviations: SD = standard deviation; QATSDD = quality assessment tool for studies with diverse designs.