From: Compliance with clinical practice guidelines for breast cancer treatment: a population-based study of quality-of-care indicators in Italy
Estrogen receptor-positive
Estrogen receptor-negative
p value
N and %
2002
319/338
23/117
< 0.01
(88.0%)
(19.6%)
2004
332/354
10/92
(89.8%)
(10.8%)