. Author manuscript; available in PMC: 2017 Jan 1.

Published in final edited form as: Clin Cancer Res. 2015 Aug 19;22(1):243–249. doi: 10.1158/1078-0432.CCR-15-0941

Table 3. Cumulative incidence of prostate cancer by arm, with excess incidence and number needed for overdetection by ERSPC centre.

CENTRE	Cumulative PC incidence, %		Excess incidence	Number needed for overdiagnosis
	Screening, I_S	Control, I_C	(I_S-I_C), %	(1/excess incidence)^*
The Netherlands	12.5	6.2	6.3	16
Belgium	9.7	7.5	2.1	47
Sweden	12.5	7.9	4.6	22
Finland	9.4	7.5	2.0	51
Italy	5.5	4.0	1.5	69
Spain	8.2	4.6	3.7	28
Switzerland	11.6	6.0	5.6	18

Expressed as an integer, with rounding upward