in the univariate analysis , the only significantly elevated relative risks found were those for bleeding and spotting in the third trimester for cases versus control group ii ( rr = 3.7 ; 95 % ci = 1.1-15.7 ) , birth weight less than 2,500 g for cases versus control group ii ( rr = 3.4 ; 95 % ci = 1.3-9.9 ) , and gestational age of 40 weeks or less for cases versus control group i ( rr = 1.8 ; 95 % ci = 1.2-2.9 ) .
C0019080
bleeding
C0025874
spotting