Table 3 Adjusted Relative Risk for the association between episiotomy and SPT by calendar year
From: Time trends in episiotomy and severe perineal tears in Portugal: a nationwide register-based study
Adjusted RRa (95%CI) | ||
|---|---|---|
Non-instrumental delivery | Instrumental delivery | |
2000 | 0.18 (0.13 – 0.25) | 0.45 (0.25 – 0.81) |
2001 | 0.15 (0.10 – 0.22) | 0.43 (0.24 – 0.77) |
2002 | 0.12 (0.08 – 0.18) | 0.33 (0.19 – 0.58) |
2003 | 0.15 (0.10 – 0.22) | 0.23 (0.14 – 0.38) |
2004 | 0.17 (0.11 – 0.26) | 0.28 (0.15 – 0.53) |
2005 | 0.11 (0.07 – 0.16) | 0.26 (0.14 – 0.49) |
2006 | 0.14 (0.10 – 0.20) | 0.34 (0.18 – 0.64) |
2007 | 0.12 (0.09 – 0.17) | 0.27 (0.17 – 0.42) |
2008 | 0.09 (0.06 – 0.13) | 0.39 (0.24 – 0.64) |
2009 | 0.13 (0.10 – 0.18) | 0.45 (0.28 – 0.72) |
2010 | 0.11 (0.08 – 0.17) | 0.44 (0.29 – 0.68) |
2011 | 0.24 (0.18 – 0.32) | 0.61 (0.40 – 0.94) |
2012 | 0.22 (0.16 – 0.31) | 0.52 (0.34 – 0.80) |
2013 | 0.43 (0.31 – 0.59) | 0.57 (0.37 – 0.88) |
2014 | 0.29 (0.20 – 0.41) | 0.50 (0.35 – 0.71) |
2015 | 0.59 (0.44 – 0.79) | 0.50 (0.40 – 0.72) |