Table 8.

Summary of Evidence Tables for Odds Ratios*

Risk Factor/Screen (Arc)Odds RatioMeta-analytic
Odds Ratio
(CI§)
Sample SizeNo. of
Arms
Unweighted
Average (SD)
Weighted
Average
(SD)
Average
(SD)
Total
Female
 Pediatric (1 → 3 Fe)4.52 (2.4)3.8 (0.05)4.14 (3.0–5.7)38 821 (41 729)427 03911
 Orthopaedic (1 → 5 Fe)4.71 (1.66)4.38 (0.09)4.52 (3.2–6.2)18 982 (11 298)75 9294
 Ultrasonographic (1 → 4 Fe)5.84 (1.89)1.41 (0.10)5.16 (2.48–11.7)3405 (1085)10 2163
Breech
 Pediatric (1 → 3 Br)7.32 (8.21)4.11 (0.06)5.47 (2.58–11.6)20 117 (19 492)201 46510
 Orthopaedic (1 → 5 Br)8.42 (4.60)4.05 (0.07)7.03 (4.48–11.9)16 209 (8929)  113 4647
 Ultrasonographic (1 → 4 Br)0.59200020001
Family history
 Pediatric (1 → 3 FH)4.65 (4.63)1.09 (0.07)1.72 (0.05–55.00)7451 (10 424)30 1644
 Orthopaedic (1 → 5 FH)0
 Ultrasonographic (1 → 4 FH)2.78 (1.06)2.85 (0.14)2.89 (1.0–7.1)3324 (1872) 66482
  • Fe indicates female; Br, breech; FH, family history.

  • * See Evidence Tables 9 through 16.

  • Arc refers to the influence diagram (see Fig. 2).

  • Weighted estimates computed by pooling the cells of the component 2 × 2 tables.

  • § Bayesian confidence interval.