After adjusting for age , sex , and baseline worry , at 7 to 14 days after screening , the FOBT ( + ) group was 3.82 [ 95 % confidence interval ( CI ) , 1.09-13 .43 ] times more likely to report colorectal cancer-related mood disturbances and significantly higher mean STAI scores than the FOBT ( - ) group ( mean = 38.8 vs. 30.9 ; P = 0.007 ) .