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Fig. 2 | BMC Medicine

Fig. 2

From: The trend of caesarean birth rate changes in China after ‘universal two-child policy’ era: a population-based study in 2013–2018

Fig. 2

Caesarean birth rate of NFPCP participants in 2013–2018, before and after the universal two-child policy. A1 Caesarean birth rate of NFPCP participants in 2013–2018; cRate, crude rate; sRate, standardized rate. A3 After adjustment for baseline characteristics distributed differently in the study period, marginal effect results revealed the changing amount of caesarean birth rate. A2, A4 Interrupted time series (ITS) analysis to determine impacts of the universal two-child policy on the trend of caesarean birth. B1B4 Trends of caesarean birth rate in different household register type (rural and urban) and parity (primipara and multipara)

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