Selection
1	Did the authors present their reasons for selecting or recruiting the number of people included or analysed?
	0. No
	1. Yes
2	Was the study sample likely to be representative of the study population?
	0. Nonprobability sampling (including purposive, quota, convenience, and snowball sampling)
	1. Probability sampling (including simple random, systematic, stratified random, cluster, two-stage, and multistage sampling)
3	Was the dentist satisfaction survey valid and reliable?
	0. No
	1. Yes
4	Was a response rate proper?
	0. No
	1. Yes
Confounding factors
5	Were there any considerations for important disturbance variables, such as age or sex, related to dental job satisfaction?
	0. No
	1. Yes
Outcome
6	Was the measurement tool used for assessment of outcome (overall job satisfaction and related factors) valid and reliable?
	0. No
	1. Yes
7	Was the statistical adjustment adequately performed? (ie, The effect of confounders when evaluating the influence of independent variables on dental job satisfaction)
	0. No
	1. Yes
8	Was the evaluation performed independently by 2 raters blinded to each other?
	0. No
	1. Yes
Methodological Appraisal Score
Bad	Satisfactory	Good
0%-33 %	34%-66 %	67-100 %

0 = no or not reported; 1 = yes.

Note. Scoring: Total score divided by total number of items multiplied by 100.

Quality appraisal score: weak: 0%-33.9%, moderate: 34%-66.9%, and strong: 67%-100%.