Table 1.

Details of cases (invasive tubo-ovarian cancer) and controls in training and validation sets.

Group	Overall		Annual Samples Available in Year Preceding Diagnosis
	No. of Women	No. of Annual Samples	No. of Women	No. of Annual Samples
Training Set
Cases	90	317	68	68
Controls	91	359	113/167 *	608
Validation Set
Cases	89	332	74	74
Controls	90	355	105/173 *	613

* a case is included as a control until the screen is within a year of diagnosis for the purposes of this analysis—the first number is unique controls and the second number includes those who will become cases.