Statistic package for social science spss version 19

The study variables included age and year of diagnosis, laterality and the primary tumor site as well as LN, ER, PgR, and radiotherapy status. Furthermore, laterality and the primary tumor site were mutually calculated to determine whether the interaction between these two factors influenced BCSM.
The Chi-square test was used to compare clinicopathological characteristics of the primary tumor site. The survival curves were generated using the Kaplan-Meier method, and the log-rank test was performed to evaluate the survival difference. Adjusted hazard ratios (HRs) along with 95% confidence intervals (CIs) were calculated using the Cox proportional hazards regression model. Pair-wise comparisons were conducted between various combinations of laterality and primary tumor sites to determine BCSM differences. All statistical analyses above were performed using the Statistic Package for Social Science (SPSS), version 19.0 (SPSS Inc., Chicago, IL). Two-sided P values less than .05 were considered statistically significant.

Continuous data were presented as the means and standard deviations (SD). Categorical data were presented as the numbers and percentages. By comparing the DVT group with the non-DVT group, when performing univariate logistic regression analysis when P values < 0.05 is a risk factor. When the factors P values is < 0.1, a multivariate analysis is performed. These risk factors were then included in multivariate logistic regression analyses to detect the risk factors independently affecting the DVT. Odds ratios were displayed with a 95% confidence interval if the p < 0.05. P < 0.05 was considered statistically significant. All data were analyzed in Statistic Package for Social Science (SPSS) version 19.0 (SPSS Inc., Chicago, USA).