Table 1.

The proportion of patients with thrombocytosis and normal platelet counts diagnosed with cancer, within 0–12, 4–12, and 13–24 months of platelet count index date

	Thrombocytosis (n= 31 261)				Normal platelet count (n= 7969)

	Males		Females		Males		Females

Time from index date (months)	N	Cancers diagnosed, n PPV (95% CI)	N	Cancers diagnosed, n PPV (95% CI)	N	Cancers diagnosed, n % diagnosed (95% CI)	N	Cancers diagnosed, n % diagnosed (95% CI)
0–12	9435	1098	21 826	1355	2599	106	5370	119
0–12	9435	11.6% (11.0 to 12.3)		6.2% (5.9 to 6.5)		4.1% (3.4 to 4.9)		2.2% (1.8 to 2.6)

4–12	8677^a	340	20 974^a	503	2544^a	51	5321^a	70
4–12	8677^a	3.9% (3.5 to 4.3)		2.4% (2.2 to 2.6)		2.0% (1.5 to 2.6)		1.3% (1.0 to 1.7)

13–24	8337^b	224	20 471^b	373	2493^b	35	5251^b	72
13–24	8337^b	2.7% (2.4 to 3.1)		1.8% (1.6 to 2.0)		1.4% (1.0 to 1.9)		1.4% (1.1 to 1.7)

↵a Excluding patients with cancer diagnoses recorded within months 0–3.
↵b Excluding patients with cancer diagnoses recorded within months 0–12. PPV = positive predictive value.