Evaluating whether Prostate Cancer UK’s risk checker is a help or hindrance to prostate-specific antigen testing policy: a mixed-methods study

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Figure 1. Risk checker information flow for men who have one or more of the three main risk factors for prostate cancer. PSA = prostate-specific antigen.
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Figure 2. Monthly proportion of men who answered if the risk checker helped them decide whether to have a PSA blood test or not, January 2022–May 2023. PSA = prostate-specific antigen.

Table 1. Risk checker user characteristics

Characteristics	Version 2		Version 3
	April 2021–December 2021		January 2022–May 2023
	n	%	n	%
Total population	118 332	100.0	1 080 029	100.0
Men with prostate cancer risk factors	94 814	80.1	859 842	79.6
Men without prostate cancer risk factors	23 518	19.9	220 187	20.4
Age, years
<45	15 423	13.0	135 715	12.6
45–49	10 343	8.7	107 293	9.9
50–54	16 545	14.0	178 292	16.5
55–59	17 488	14.8	186 790	17.3
60–64	19 533	16.5	165 081	15.3
65–69	17 115	14.5	132 276	12.2
≥70	21 885	18.5	174 583	16.2
Ethnicity
Black or Mixed Black	4967	4.2	49 564	4.6
Not Black or Mixed Black	113 365	95.8	1 030 466	95.4
Family history of prostate cancer
Yes	16 704	14.1	146 860	13.6
No	101 628	85.9	933 170	86.4

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