Table 2.

Clinical variables in patients with calcaneus fractures, univariate comparison between non-operative and operative treatment

	Total	Non-operative	Operative	p
Sample size	17,156	10,117 (58.97%)	7039 (41.03%)
Diabetes, uncomplicated	1386	936 (67.53%)	450 (32.47%)	< 0.001
Diabetes, with chronic complications	495	392 (79.19%)	103 (20.81%)	< 0.001
AIDS	32	25 (78.13%)	7 (21.88%)	0.026
Drug abuse	1076	798 (74.16%)	278 (25.83%)	< 0.001
Peripheral vascular disorders	656	483 (73.63%)	173 (26.37%)	< 0.001
Alcohol abuse	1333	1024 (76.82%)	309 (23.18%)	< 0.001
Psychosis	151	114 (75.50%)	37 (24.50%)	< 0.001
Depression	1271	824 (64.83%)	447 (35.17%)	< 0.001
Obesity	789	514 (65.15%)	275 (34.85%)	< 0.001
Smoking	4213	2490 (59.10%)	1723 (40.90%)	0.85