Least-squares mean treatment difference ( low-dose PI vs. UC ) in calculated 10 year CHD risk was -26.8 ( 95 % CI : -31.7 , -22.0 ; p < 0.001 ) after 52 weeks ' follow-up and -24.8 ( -29.8 , -19.9 ; p < 0.001 ) after 16 weeks ' follow-up .
