The RDs of the MMR showed decreasing trends from 1991 to 2007 and from 2007 to 2010, then an increasing trend from 2010 to 2020, but these changes were not significant (Fig. 5 ).
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Trends in maternal and child health in China and its urban and rural areas from 1991 to 2020: a joinpoint regression model.
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The RRs of MMR showed increasing trends from 1991 to 2004 and from 2010 to 2020, with a decreasing trend from 2004 to 2010, although the changes were not significant (Fig. 6 ).