Demographic and tumor characteristics of the study sample.

a P value of Chi-square test comparing the mastectomy only and the pooled reconstruction groups.b P value of Chi-square test comparing the autologous only and implant only groups.c Including American Indian/AK Native, Asian/Pacific Islander.d Including divorced, widowed, single (never married),separated.% of individuals having over a 12th grade education level; Low indicates a county with less than 78.0% (including 78.0%) of individuals having over a 12th grade education level. (78.0% is the median of all county education data studied).e High indicates a county with greater than 78.0f Grade are coded as followings: Well differentiated; Grade I; Moderately differentiated; Grade II; Poorly differentiated; Grade III; Unknown.g ER: Estrogen Receptor; PR: Progesterone Receptor.