Comparation of the perioperative clinical characteristics during total hip arthroplasty of patients with rheumatoid arthritis and ankylosing spondylitis

Table 3 Clinical outcome

	RA	AS	P value	Significance
Postoperative Barthel index	66.67 ± 10.63	64.77 ± 11.22	0.5062	ns
ESR (mm/h)
Postoperative 1 day	49.85 ± 32.98	32.17 ± 21.28	0.0258	*
Postoperative 3 days	87.89 ± 29.37	63.75 ± 23.36	0.0015	**
CRP (mg/L)
Postoperative 1 day	57.34 ± 34.84	61.55 ± 22.66	0.6087	ns
Postoperative 3 days	60.22 ± 33.17	61.73 ± 26.80	0.8547	ns
IL-6 (ng/L)
Postoperative 1 day	88.53 ± 68.63	43.22 ± 27.15	0.0038	**
Postoperative 3 days	26.49 ± 15.41	31.25 ± 12.32	0.2159	ns
PCT (ng/mL)
Postoperative 1 day	0.19 ± 0.19	0.10 ± 0.09	0.0162	*
Postoperative 3 days	0.11 ± 0.09	0.13 ± 0.06	0.3501	ns
PT (s)	12.98 ± 0.91	13.48 ± 0.85	0.0616	ns
APTT (s)	32.15 ± 4.49	36.02 ± 5.09	0.0033	**
D dimer (mg/L)	0.89 ± 0.63	0.48 ± 0.10	0.0034	**

ESR: erythrocyte sedimentation rate, CRP: C-reactive protein, IL-6: interleukin- 6, PCT: procalcitonin, PT: prothrombin time, APTT: activated partial thromboplastin time
*: P<0.05; **: P<0.01; ns: non-statistical difference

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