Table I.

Demographics of patients and control subjects enrolled in the present study.

		Age (years)
Groups	n	Median	Range	Carbohydrate antigen 15-3 level (U/ml)
Breast cancer				24.59±15.79
Stages I and II	27	53.7	37–73	16.77±2.50
Stages III and IV	35	53.5	41–61	30.62±18.89
Non-cancerous individuals
Healthy controls	16	38.7	21–52	15.92±4.8
Benign breast disease	31	41.3	23–71	16.01±5.27