RESULTS	Mean ( standard deviation ) physical and mental component scores on the SF-12 were higher for participants with intermittent claudication relative to those with angina ( physical component score : 42.3 ( 10.6 ) vs. 35.0 ( 11.7 ) , p < 0.001 ; mental component score : 52.3 ( 8.5 ) vs. 46.5 ( 11.7 ) , p = 0.001 ) .\