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Table 1 Effective Public Health Practice Project Quality Assessment Components and Ratings

From: A review of the nature and effectiveness of nutrition interventions in adult males – a guide for intervention strategies

Components Strong Moderate Weak
Selection Bias Very Likely to be representative of the target population and greater than 80% participation rate Somewhat likely to pre representative of the target population and 60–79% participation rate All other responses or not stated
Design RCT or CCT Cohort analytic, case control, cohort or an interrupted time series All other designs of design not stated
Confounders Controlled for at least 80% of confounders Controlled for at least 60–79% of confounders Confounders not controlled for or not stated
Blinding ` Blinding on outcome assessor and study participants to intervention status and/or research question Blinding of either outcome assessor or study participants Outcome assessor and study participants are aware of intervention status and/or research question
Data collection methods Tools are valid and reliable Tools are valid but reliability not described No evidenced of validity or reliability
Withdrawals and dropouts Follow-up rate of >80% of participants Follow-up rate of 60–79% of participants Follow-up rate of <60% of participants or withdrawals and dropouts not described