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Table 1 socio-demographic characteristics and reproductive history of cases and controls

From: The risk factor profile of women with secondary infertility: an unmatched case-control study in Kigali, Rwanda

Variable cases N = 177 n (%) controls N = 219 n (%) P-value
Total number of pregnancies 1 303 625  
Pregnancies, median (IQR) 1 (1-2) 3 (2-5) < 0.001
Year of last delivery, median (IQR) 1998 (1994-2002) 2003 (1999-2005) < 0.001
Age, median (IQR) 32 (28-37) 28 (25-32) < 0.001
Education    
Up to primary 135 (76) 175 (80) 0.38
More than primary 42 (24) 44 (20)  
Marital status    
   Single 94 (53) 125 (57)  
   Married 83 (47) 93 (42) 0.47
   Separated, divorced or widowed 0 (0) 1 (1)  
Parity    
0 24 (13) 0 (0)  
1 101 (57) 9 (4) < 0.001
2-3 45 (25) 118 (54)  
4 or more 7 (4) 92 (42)  
Living children    
0 78 (44) 0 (0) < 0.001
1-2 93 (52) 84 (38)  
3 or more 6 (3) 135 (62)  
Ever had a deceased child    
No 94 (53) 154 (70) < 0.001
yes 83 (47) 65 (30)  
  1. 1excluding last pregnancy for fertile women