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Table 1 Description of study samples of women giving birth in France in 2010 and 2016

From: A rise in births following contraceptive failure in France between 2010 and 2016: results from the French national perinatal surveys

  Overall (%) 2010 (%) 2016 (%) P value
N = 11 590 N = 9703
Age, years
18–19 1.6 1.8 1.2  < 0.001
20–24 13.0 14.4 11.2  
25–29 33.4 34.0 32.7  
30–34 33.1 31.6 34.9  
35–39 15.7 15.1 16.6  
≥ 40 3.2 3.1 3.4  
Parity
0 41.0 41.7 40.2 0.15
1 36.6 36.1 37.1  
2 14.9 14.6 15.1  
≥ 3 7.6 7.5 7.6  
History of abortion     
None 83.0 83.3 82.7 0.005
1 13.5 13.6 13.3  
2 or more 3.5 3.1 4.0  
Country of birth     
France 84.8 85.1 84.4 0.27
Other European country 3.4 3.2 3.6  
North Africa 5.7 5.7 5.6  
Sub-Saharan Africa 3.7 3.6 3.8  
Other country 2.5 2.4 2.6  
Level of education
Middle school or less 24.6 26.3 22.5 < 0.001
High school 20.5 19.8 21.5  
Some college 21.1 22.3 19.6  
College 18.3 18.3 18.3  
Post-graduate level 15.5 13.3 18.1  
Health insurance coverage at the beginning of pregnancy
National plan 87.8 88.0 87.6 0.35
Insurance for low income/undocumented or no insurance 12.2 12.0 12.4