Table 1 Distribution of patients to the different therapeutic regimens (total patient population, n = 4 672).

Patient group	n (% of total patient population)	Years between diagnosis and starting therapy (median)	Age (mean ± standard deviation)	ECOG 0 or 1n (% of this subgroup)
Adjuvant, patient started letrozole within 1 year after diagnosis	4 181 (89.5)	0.20	65.0 (± 8.4)	4 018 (96.3)
Adjuvant, patient started letrozole 1–5 years after diagnosis	200 (4.3)	2.32	61.5 (± 9.3)	198 (99.5)
Adjuvant, patient started letrozole 6–10 years after diagnosis	39 (0.8)	6.03	60.2 (± 10.2)	36 (92.3)
Metastatic disease	252 (5.4)	0.49	66.1 (± 11.1)	217 (86.1)