The data was stored and analyzed using the SPSS
(Statistical Package for the Social Sciences), program,
version 13.0. The descriptive analyses were undertaken
to characterize the sample and included the calculation
of absolute frequency, percentage, and measurements
of central tendency. For the comparative analysis of the
QLRH before and after the chemotherapy treatment, the
paired t test was used, due to the normal distribution
of the data. The Kaplan-Meier method was used for the
survival curve.