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Table 3 Subgroup differences and quality of reviews

From: A meta-epidemiological study of subgroup analyses in cochrane systematic reviews of atrial fibrillation

Quality

Subgroup analyses

Planned

Post hoc

Planned or post hoc

Planned

Conducted

Subgroup effects

Conducted

Subgroup effects

Subgroup effects

Low: mean (SD)

2.00 (2.45)

1.11 (2.09)

1.50 (2.12)

0.33 (0.50)

1.75 (2.36)

3.25 (4.48)

High: mean (SD)

4.75 (1.58)

0.88 (0.99)

0.75 (0.96)

0.25 (0.46)

0.29 (0.49)

0.63 (1.06)

p value (T-test)

0.02

1.00

0.71

0.62

0.30

0.57

  1. SD standard deviation