Table 2.

Subsequent gFOBT screen 21–30 months after baseline normal gFOBT result.

	Males	Females
Total subsequent gFOBT screen participants	44,362/101,526 (43.70%)	57,164/101,526 (56.30%)
Normal result	42,290/44,362 (95.33%)	55,393/57,164 (96.90%)
Positive result	2,072/44,362 (4.67%)	1,771/57,164 (3.10%)
Results by age strata∗
50–54 years
Normal result	11,347/11,924 (95.16%)	16,391/16,867 (97.18%)
Positive result	577/11,924 (4.84%)	476/16,867 (2.82%)
55–59 years
Normal result	9,705/10,140 (95.71%)	12,689/13,072 (97.07%)
Positive result	435/10,140 (4.29%)	383/13,072 (2.93%)
60–64 years
Normal result	9,497/9,937 (95.57%)	12,057/12,461 (96.76%)
Positive result	440/9,937 (4.43%)	404/12,461 (3.24%)
65–69 years
Normal result	8,024/8,443 (95.04%)	9,804/10,147 (96.62%)
Positive result	419/8,443 (4.96%)	343/10,147 (3.38%)
70–74 years
Normal result	3,717/3,918 (94.87%)	4,452/4,617 (96.43%)
Positive result	201/3,918 (5.13%)	165/4,617 (3.57%)

^∗Difference in percent positive results between males and females in all age strata, p < 0.0001, except ages 70–74, p = 0.0004.