Comparing the magnesium sulfate and placebo groups revealed no statistically significant difference in proportions with cerebral palsy ( 23/295 [ 8 % ] and 21/314 [ 7 % ] , respectively ; odds ratio [ OR ] , 1.26 ; 95 % CI , 0.84-1 .91 ; P = .27 ) or abnormal motor function ( 80/297 [ 27 % ] and 80/300 [ 27 % ] , respectively ; OR , 1.16 ; 95 % CI , 0.88-1 .52 ; P = .28 ) .