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.