Table 3.

Differences in the Initial Phase and in Level and Trend Changes in Log Odds of Caesarean Section (95% Confidence Intervals) Between Inner Mongolia (Reference) and Jiangsu with and Without Covariate Adjustment

	Unadjusted Difference	Adjusted Difference
Initial level difference ()	2.209 (2.479, 1.949)**	1.989 (2.267, 1.721)***
Initial trend difference ()	0.019 (0.038, 0.000)*	0.017 (0.036, 0.002)
Level-change difference in log odds with partial two-child policy ()	0.537 (1.068, 0.006)*	0.549 (1.087, 0.013)*
Trend-change difference in log odds with partial two-child policy ()	0.049 (0.027, 0.072)***	0.047 (0.024, 0.070)***
Level-change difference in log odds with universal two-child policy ()	3.340 (5.020, 1.673)***	2.524 (4.217, 0.844)**
Trend-change difference in log odds with universal two-child policy ()	0.057 (0.025, 0.088)***	0.042 (0.010, 0.074)**

Notes: *5% significance; **1% significance; ***0.1% significance.