Table 2.
Risk recurrence of breech presentation at term amongst the first three pregnancies in the period 1994–2002 in New South Wales
| Presentation at term in each birth |
Breech risk in latest birth (%) | Relative risk (95% confidence interval) |
|||
|---|---|---|---|---|---|
| First | Second | Third | Unadjusted | Adjusted* | |
| Vertex | Breech | — | 2422 (2.2) | 1.00 (reference) | 1.00 (reference) |
| Breech | Breech | — | 475 (9.9) | 4.44 (4.04–4.88) | 3.18 (2.83–3.56) |
| Vertex | Vertex | Breech | 376 (1.9) | 1.00 (reference) | — |
| Vertex | Breech | Breech | 36 (10.7) | 5.54 (4.00–7.67) | — |
| Breech | Vertex | Breech | 46 (6.6) | 3.60 (2.70–4.80) | — |
| Breech | Breech | Breech | 14 (27.5) | 13.90 (8.75–22.09) | — |
*
Analyses adjusted for the risk factors presented in Table 3.
Given the small numbers of third breech deliveries and the number of factors for adjustment, adjusted relative risks have only been calculated for recurrence of breech presentation in a second pregnancy.