Normal result (%; 95% CI)	Abnormal result (%; 95% CI)
Never returned	260 (73.9; 68.9-78.4)	35 (72.9; 58.2-84.7)
Returned	92 (26.1; 21.6-31.1)	13 (27.1; 15.3-41.8)
Total	352	48