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Table 3 Range of overall assessments by study and bias domains

From: Applying the ROBINS-I tool to natural experiments: an example from public health

 

Domain 1: confounding

Domain 2: selection

Domain 3: classification of intervention

Domain 4: deviation from interventions

Domain 5: missing data

Domain 6: measurement of outcomes

Domain 7: selection of reported result

ROBINS-I overall

Cochrane risk of bias (version1)

EPHPP

Braubach [12]

3–4

(0) 3–4 Ŧ

1

14

2–3

2–3

2

3–4

Serious–Critical

Critical

Low

Hopton [14]

2–4

1–4

1–2

1–3

3

2–3

2

2–4

Moderate–Critical

Critical

Moderate

Shortt [13]

3–4

3–4

1–2

2–3

2–3

(0) 2–3Ŧ

2–3

3–4

Serious–Critical

Critical

Moderate

Somerville [15]

4

3–4

1

1–2

2–3

3

2

4

Critical

Critical

Moderate

Walker [16]

2–3

1–4

1–2

1–2

(0) 2–3Ŧ

1–3

2–3

2–3

Moderate–Serious

Critical

Low

  1. Risk of bias assessment: 0 No information; 1 Low; 2 Moderate; 3 Serious; 4 Critical
  2. Bold figures indicate disagreement of two or more levels of bias across assessments
  3. Ŧ0 (no information) was assessed as equivalent to “Serious” (3) indicating agreement within one level of bias for each domain where “0” was used by one or more assessor