Table 5. Segments, joinpoints, and trends in C-section rates in Robson groups with the highest expected values for C-sections in Brazil and its regions, 2014-2022.
| Robson groups | Brazil | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Segment 1 | Segment 2 | ||||||||||
| Period | APC | 95%CI | Trend | Period | APC | 95%CI | Trend | ||||
| R6 | 2014-2019 | 0.60 * | 0.37; 1.26 | Increasing | 2019-2022 | 0.08 | -0.64; 0.46 | Stationary | |||
| R7 | 2014-2019 | 0.98 * | 0.83; 1.23 | Increasing | 2019-2022 | 0.17 | -0.33; 0.48 | Stationary | |||
| R8 | No segment formed | ||||||||||
| R9 | No segment formed | ||||||||||
| R10 | 2014-2016 | -0.60 | -1.56; 1.08 | Stationary | 2016-2022 | 1.71 * | 1.33; 2.90 | Increasing | |||
| North | |||||||||||
| Segment 1 | Segment 2 | ||||||||||
| Period | APC | 95%CI | Trend | Period | APC | 95%CI | Trend | ||||
| R6 | No segment formed | ||||||||||
| R7 | 2014-2016 | 3.20 * | 1.55; 4.52 | Increasing | 2016-2022 | -0.52 * | -0.98; -0.24 | Decreasing | |||
| R8 | 2014-2016 | -0.69 | -1.76; 0.80 | Stationary | 2016-2022 | 0.72 | -0.48; 2.06 | Stationary | |||
| R9 | No segment formed | ||||||||||
| R10 | 2014-2016 | -1.92 | -3.46; 0.78 | Stationary | 2016-2022 | 3.68 * | 3.14; 4.66 | Increasing | |||
| Northeast | |||||||||||
| Segment 1 | Segment 2 | ||||||||||
| Period | APC | 95%CI | Trend | Period | APC | 95%CI | Trend | ||||
| R6 | No segment formed | ||||||||||
| R7 | 2014-2016 | 2.23 * | 1.96; 2.53 | Increasing | 2019-2022 | 0.40 | -0.21; 0.93 | Stationary | |||
| R8 | No segment formed | ||||||||||
| R9 | No segment formed | ||||||||||
| R10 | 2014-2016 | 0.14 | -1.30; 2.50 | Stationary | 2016-2022 | 2.89 * | 2.26; 4.86 | Increasing | |||
| Southeast | |||||||||||
| Segment 1 | Segment 2 | ||||||||||
| Period | APC | 95%CI | Trend | Period | APC | 95%CI | Trend | ||||
| R6 | No segment formed | ||||||||||
| R7 | No segment formed | ||||||||||
| R8 | No segment formed | ||||||||||
| R9 | 2014-2018 | 0.35 * | 0.07; 0.98 | Increasing | 2018-2022 | 0.00 | -0.65; 0.28 | Stationary | |||
| R10 | 2014-2018 | -0.25 | -1.09; 0.15 | Stationary | 2018-2022 | 1.04 * | 0.63; 1.91 | Increasing | |||
| South | |||||||||||
| Segment 1 | Segment 2 | ||||||||||
| Period | APC | 95%CI | Trend | Period | APC | 95%CI | Trend | ||||
| R6 | No segment formed | ||||||||||
| R7 | No segment formed | ||||||||||
| R8 | No segment formed | ||||||||||
| R9 | No segment formed | ||||||||||
| R10 | No segment formed | ||||||||||
| Central-West | |||||||||||
| Segment 1 | Segment 2 | ||||||||||
| Period | APC | 95%CI | Trend | Period | APC | 95%CI | Trend | ||||
| R6 | 2014-2016 | 1.95 * | 0.51; 3.32 | Increasing | 2016-2022 | -0.21 | -1.08; 0.05 | Stationary | |||
| R7 | 2014-2016 | 2.07 * | 0.51; 3.43 | Increasing | 2016-2022 | 0.03 | -1.17; 0.44 | Stationary | |||
| R8 | 2014-2017 | 0.10 | -0.34; 0.39 | Stationary | 2017-2022 | 0.55 * | 0.39; 0.95 | Increasing | |||
| R9 | 2014-2017 | -0.81 * | -1.88; -0.05 | Decreasing | 2017-2022 | 0.19 | -0.25; 1.26 | Stationary | |||
| R10 | No segment formed | ||||||||||
95%CI: 95% confidence interval; APC: annual percentage change.
Source: prepared by the authors.
* Significant trend.