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Official Journal of the Italian Society of Orthopaedics and Traumatology

Table 2 Risk of bias assessment tool for cohort studies

From: Treatment of stable slipped capital femoral epiphysis: systematic review and exploratory patient level analysis

Domain

Items

Maximum number of stars

Notes

Selection

1. Representativeness of the exposed cohort

1

Maximum possible stars is 4

2. Selection of the non exposed cohort

1

3. Ascertainment of exposure

1

4. Demonstration that outcome of interest was not present at start of study

1

Comparability

Comparability of cohorts on the basis of the design or analysis

2

Maximum possible stars is 2

Outcome

1. Assessment of outcome

1

Maximum possible stars is 3

2. Was follow-up long enough for outcomes to occur

1

3. Adequacy of follow-up of cohorts

1