Table 1: Demographic factors of patients in the study.

Factor Number Mean LOS Median LOS  [25th Percentile, 75th Percentile] p-Value
Age (yrs)
< 60 129 (25.0%) 3.7 ± 1.0 3 [3, 4] 0.0017*
60-69 197 (38.2%) 3.8 ± 1.1 4 [3, 4]  
70-79 144 (27.9%) 4.1 ± 1.4 4 [3, 4]  
≥ 80 46 (8.9%) 4.4 ± 1.9 4 [3, 5]  
Gender
Male 177 (34.3%) 3.7 ± 1.2 4 [3, 4] 0.0008**
Female 339 (65.7%) 4.0 ± 1.3 4 [3, 4]  
Laterality
Left 265 (51.4%) 4.0 ± 1.4 4 [3, 4] 0.2344**
Right 251 (48.6%) 3.8 ± 1.1 4 [3, 4]  
BMI (kg/m2) †
< 18.5 1 (0.2%) 4 4 [4, 4] 0.1012*
18.5-24.9 91 (17.7%) 3.7 ± 0.9 4 [3, 4]  
25-29.9 194 (37.7%) 4.0 ± 1.4 4 [3, 4]  
30-34.9 123 (23.9%) 3.8 ± 0.8 4 [3, 4]  
35-39.9 73 (14.2%) 4.0 ± 1.5 4 [3, 4]  
≥ 40 32 (6.2%) 4.6 ± 1.7 4 [4, 5]  

* Obtained from Kruskal-wallis test.
** Obtained from Wilcoxon rank-sum test.
† Some missing data.