Journal of Orthopaedic Surgery and Research

Table 2 Demographic data of the study population and divided by the two cohorts

From: Introduction of national guidelines for restrictive blood transfusion threshold for hip fracture patients––a consecutive cohort study based on complete follow-up in national databases

	Study population		Liberal group		Restrictive group
	n	%	n	%	n	%	p<
Total	2908	100	1494	100	1414	100
Age
65–74	590	20	308	21	282	20
75–84	1018	35	514	34	504	36	0.766
≥ 85	1300	45	672	45	628	44
Sex
Female	2.014	69	1065	71	949	67	0.015
Male	894	31	429	29	465	33	0.015
CCI
None (0)	1019	35	526	35	493	35	0.800
Low (1–2)	1238	43	641	43	597	42
High (≥ 3)	651	22	327	22	324	23
BMI
< 18.5	278	10	153	10	125	9
18.5–24.9	1269	44	645	43	624	44
25–29.9	686	24	341	23	345	24	0.433
≥ 30	210	7	102	7	108	8
Missing	465	16	253	17	212	15
Prescription medicine
NSAID	223	8	137	9	86	6	0.002
Diabetes	330	11	166	11	164	11	0.66
Anticoagulant	1191	41	620	42	571	41	0.58
Antihypertensive	1457	50	757	51	700	49	0.58
Statin	720	25	356	24	364	26	0.22
Glucocorticoid	172	6	89	6	83	6	0.94
Depression medicine	888	31	486	33	402	29	0.02
COPD medicine	399	14	209	14	190	13	0.69
Type of fracture
Femoral neck	1693	59	875	59	818	58	0.851
Pertrochanteric	948	32	480	33	468	33
Subtrochanteric	267	9	139	9	128	9
Type of surgery
Cannulated screws	383	13	206	14	177	13	0.001
Sliding hip screw	677	23	404	27	273	19
Intramedullary nail	787	27	357	24	431	30
Arthroplasty	1018	35	506	34	512	36
Miscellaneous	42	1	21	1	21	1
Time to surgery
< 24 h	2050	72	1104	74	946	69
24–48 h	636	22	317	21	319	23	0.001
> 48 h	180	6	65	4	115	8

NSAID nonsteroidal anti-inflammatory drug, COPD chronic obstructive pulmonal disease

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ISSN: 1749-799X

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