Table 1 Patient characteristics

From: Joint symptoms associated with anastrozole and letrozole in patients with breast cancer: a retrospective comparative study

	Anastrozole	Letrozole	p -value
Patients (n)	70	71
Median age, years (range)	64 (51–84)	64 (49–88)	0.579^a
Stage
0	1	0
I	20	15
IIA	25	21
IIB	6	14
IIIA	5	8
IIIB	5	4
IIIC	2	3
IV	1	1
Recurrence	4	4
Unknown	1	1
History of hormone therapy
Yes	10	24	< 0.01^b
No	60	47
History of chemotherapy
Yes	27	41	0.029 ^b
No	43	30

^a Mann–Whitney U test
^bFisher’s exact test

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