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Table 4 GRADE pain

From: Systematic review: preoperative psychological factors and total hip arthroplasty outcomes

Certainty assessment

No. of patients

Follow-up

Study design

Risk of bias

Inconsistency

Indirectness

Imprecision

Quality

WOMAC pain

0–1 week

None

      

1–12 weeks

3 observational studies

None

Not serious

Not serious

Not serious

Low

167

12 weeks–6 months

2 observational studies

None

Not serious

Not serious

Not serious

Low

813

6 months–2 years

2 observational studies

None

Not serious

Serious

Not serious

Very low

350

Over 2 years

None

      

VAS

0–1 week

1 observational study

None

Not serious

Not serious

Not serious

Low

93

1–12 weeks

None

      

12 weeks–6 months

None

      

6 months–2 years

2 observational studies

None

Not serious

Not serious

Not serious

Low

6198

Over 2 years

None

      

SF-36 pain

0–1 week

None

      

1–12 weeks

2 observational studies

None

Not serious

Not serious

Not serious

Low

123

12 weeks–6 months

None

      

6 months–2 years

1 observational study

None

Not serious

Not serious

Not serious

Low

44

Over 2 years

None

      

BPI

0–1 week

1 observational study

None

Not serious

Not serious

Not serious

Low

64

1–12 weeks

None

      

12 weeks–6 months

1 observational study

None

Not serious

Not serious

Not serious

Low

862

6 months–2 years

None

      

Over 2 years

None

      

HOOS

0–1 week

None

      

1–12 weeks

None

      

12 weeks–6 months

None

      

6 months–2 years

1 observational study

None

Not serious

Not serious

Not serious

Low

140

Over 2 years

None

      

Other

0–1 week

None

      

1–12 weeks

None

      

12 weeks–6 months

None

      

6 months–2 years

1 observational study

None

Not serious

Serious

Not serious

Very low

441

Over 2 years

None

      
  1. WOMAC Western Ontario and McMaster University Osteoarthritis Index, VASVisual analogue scale, SF-36 Short-form health survey, BPI Brief pain index, HOOS Hip Dysfunction and Osteoarthritis Outcome Score