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. Author manuscript; available in PMC: 2010 Mar 16.
Published in final edited form as: Am J Epidemiol. 2005 Jun 1;161(11):1047–1055. doi: 10.1093/aje/kwi132

TABLE 4.

Standardized incidence ratio of breast cancer in 2,933 Danish females with nonsyndromic oral cleft during follow-up from 1943 through 1998*

Breast cancer
(females)† 		Observed
(no.)		 Expected
(no.)		 Standardized
incidence
ratio		 95%
Confidence
interval
Cleft lip only 8 5.69 1.41 0.61, 2.77
Cleft lip +
    cleft palate		 11 6.48 1.70 0.85, 3.04
Cleft palate only 14 9.02 1.55 0.85, 2.60
*

Data are stratified into subtypes of nonsyndromic oral cleft.

†

No male with oral cleft had breast cancer, and none of the syndromic cleft cases had breast cancer.