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. Author manuscript; available in PMC: 2014 Jul 15.

Published in final edited form as: Bone Joint J. 2013 May;0(5):629–635. doi: 10.1302/0301-620X.95B5.30406

Table I.

Patient characteristics (PCEA+FNB, patient-controlled epidural analgesia plus femoral nerve block)

	Local infiltration	PCEA+FNB	p-value
Patients (n)	45	45
Mean age (yrs) (range)	65 (49 to 81)	67 (50 to 84)	0.239^*
Male gender (n, %)	16 (36)	16 (36)	1.000^†
Mean body mass index (kg/m²) (range)	31 (23 to 47)	32 (21 to 48)	0.722^*
Body mass index group (n, %)			0.930^†
Normal (<25 kg/m²)	2 (4)	3 (7)
Overweight (25 kg/m² to < 30 kg/m²)	20 (44)	19 (42)
Obese (30 kg/m² to < 40 kg/m²)	20 (44)	21 (47)
Morbidly obese (≥ 40 kg/m²)	3 (7)	2 (4)
Ethnicity (n, %)			0.368^†
Caucasian	37 (82)	40 (89)
Other	8 (18)	5 (11)
American Society of Anesthesiologists grade (n, %)			0.568^†
1	2 (4)	2 (4)
2	36 (80)	32 (71)
3	7 (16)	11 (24)

^*

independent samples t-test

^†

chi-squared test