RESULTS	Adverse perinatal outcome was not significantly different between groups : 11.9 % ( 24/201 ; 95 % CI , 7.5 % -16.4 % ) for nifedipine vs 13.7 % ( 28/205 ; 95 % CI , 9.0 % -18.4 % ) for placebo ( relative risk , 0.87 ; 95 % CI , 0.53-1 .45 ) .\