The purpose of this study is to evaluate the efficacy and safety of PEG-rhG-CSF in patients with breast cancer receiving chemotherapy
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
NONE
Enrollment
215
the occurrence rate of grade IV neutropenia during the first chemotherapy cycle
Time frame: through first cycle of chemotherapy,an average of 1 month
the non-occurrence rate of grade IV neutropenia (ANC < 0.5 x 10^9/L)during the next three consecutive cycles chemotherapy(except the first chemotherapy cycle)
Time frame: through the next three consecutive cycles chemotherapy,an average of 3 months
the duration of grade IV neutropenia (ANC < 0.5 x 10^9/L) during the next three consecutive cycles chemotherapy(except the first chemotherapy cycle)
Time frame: through the next three consecutive cycles chemotherapy,an average of 3 months
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