Table 1. Summary of patient and tumour characteristics by year of treatment.

	1984–1992	1993–1995	1996–1998	Total
Number of patients	131	216	403	750
Median age (years)	43	46	50	47.9
Pathological size (mean)	26.5	22.3	22.5	23.1
% T1	28	32	39	35
% T2	64	60	55	58
% node negative	18	23	41	32
% 1–3 node positive	54	60	49	53
% 4–9 node positive	23	14	8	12
% grade 3	84	56	70	67
% ER positive/rich	35	56	51	50
% post menopausal	16	23	38	30
% over 60 years	3	7	17	12
% over 70 years	0	2	2	2
% mastectomy	33	44	40	40
5-year survival (%)	65.4	74.4	74.1	71.5

ER, Oestrogen receptor; XRT, Radiotherapy.