Table 3.

Breast cancer incidence in carriers of t(11;22)(q23;q11) translocations, by attained age

			Attained age, years
			<50			≥50
ICD‐9 code	Cancer site	No.	SIR (95% CI)	AER	No.	SIR (95% CI)	AER
174, 175, 233.0	Breast, invasive or in situ	7	5.69 (2.29–11.7) ***	255.5	5	2.50 (0.81–5.84)	296.4
174, 175	Breast, invasive	5	4.37 (1.42–10.2) *	170.5	3	1.69 (0.35–4.93)	120.6
2,330	Breast, in situ	2	22.8 (2.76–82.5) **	84.7	2	9.12 (1.10–33.0) *	175.8

Abbreviations: AER, absolute excess rate; CI, confidence interval; ICD, International Statistical Classification of Diseases, 9th revision;10 SIR, standardised incidence ratio.

^* p < 0.05.

^** p < 0.01.

^*** p < 0.001.