Table 1. Baseline Characteristics of enrolled patients, Hospital Stays and THR according to sex.

		Total	Male	Female
		(n = 249 597)	(n = 105 150)	(n = 144 447)
		%	%	%
Patient Characteristics
Sex	Male	42.1	100.0
	Female	57.9		100.0
Age category, y	40–59	17.7	23.7	13.3
	60–74	44.4	46.8	42.7
	≥ 75	37.9	29.5	44.0
Comorbidities
Diabetes mellitus		11.9	14.5	10.0
Obesity		9.4	9.9	9.0
Parkinson's disease		2.5	2.2	2.8
Immunodeficiency		1.4	1.2	1.6
Cancer		2.3	2.5	2.1
Asthma or COPD		15.2	16.3	14.4
Dementia		5.0	2.8	6.6
Chronic kidney disease		1.2	1.3	1.2
Treatments
Antidepressant		18.6	11.7	23.6
Antihypertensive		60.5	59.6	61.3
Oral corticosteroid		27.9	25.2	29.8
Antiosteoporotics		10.8	2.0	17.2
Psychostimulant		0.8	0.6	1.0
Antiepileptic (non-BZD)		8.1	7.3	8.8
Anxiolytic/Hypnotic (non-BZD)		12.9	10.9	14.4
Antipsychotic		4.0	3.8	4.1
Center and Hospital stay Characteristics
Activity sector	Public	34.3	34.3	34.4
	Private	65.7	65.7	65.6
No. of procedures per month	< 14	25.1	25.2	25.1
	14–38	49.9	50.3	49.6
	> 38	25.0	24.6	25.4
Hospital stay Duration (days)	<6	5.7	6.9	4.9
	6–12	84.2	84.5	84.0
	>12	10.1	8.6	11.1
THR Characteristics
THR Cement Type	Uncemented	73.0	78.6	69.0
	Cemented	6.1	4.4	7.4
	Hybrid	19.2	15.9	21.6
	Reverse Hybrid	1.6	1.1	2.0
THR bearing surface	CoC	40.7	46.8	36.3
	CoP	21.0	20.0	21.7
	MoM	3.3	4.4	2.5
	MoP	34.0	28.0	38.4
	Unspecified	1.1	0.9	1.2

Abbreviations: CoC, ceramic-on-ceramic; CoP, ceramic-on-polyethylene; MoM, metal-on-metal; MoP,metal-on-polyethylene; THR, total hip replacement.