Table 1.

Patient characteristics in the two surgical groups at our institution, 2010

Variable	Group 1 (MBLPA)	Group 2 (standard)	P value
	Mean ± SD (min–max); N (%)	Mean ± SD (min–max); N (%)
Patient characteristics
Age	73 ± 8.0 (52–89)	72 ± 8.5 (34–88)	0.521
Gender
Male	17 (25)	94 (27)	0.471
Female	50 (75)	257 (73)
BMI	31 ± 4.5 (18–39)	30 ± 4.8 (17–45)	0.355
BMI category
Normal–preobesity	9 (13)	66 (19)	0.289
Obesity I–II	22 (30)	83 (24)
Obesity III	40 (56)	198 (57)
ASA	2.2 ± 0.5 (1–3)	2.3 ± 0.5 (1–4)	0.282
ASA status
I	2 (3)	3 (1)	0.382
II	49 (69)	205 (65)
III	20 (28)	107 (34)
Comorbidities
Number
0	37 (52)	159 (46)	0.307
1	30 (42)	140 (40)
2	3 (4.5)	38 (11)
3	1 (1.5)	10 (3)
Cardiopathy	9 (16)	60 (20)	0.292
High blood pressure	31 (54)	194 (66)	0.067
Diabetes mellitus	8 (12)	25 (7)	0.138
Dislipidemia	10 (15)	77 (22)	0.082
Venous insufficiency	1 (1)	11 (3)	0.401
Osteoporosis	3 (4)	1 (0.3)	0.017
Neoplasia	1 (1.5)	3 (0.8)	0.504
Hepatopathy	2 (3)	9 (3)	0.549
Vasculopathy	1 (2)	17 (5)	0.185
Pre-operative laboratories
Hb (g/dl)	14.1 ± 1.24 (10–16.5)	13.7 ± 1.31 (9.2–17.3)	0.033
Hb category
>13	59 (83)	254 (73)	0.337
12–13	9 (13)	66 (19)
<12	3 (4)	27 (8)
Haematocrit (%)	43.1 ± 3.5 (30.9–50.2)	41.8 ± 3.8 (28.8–52.0)	0.001
Discharge laboratories
Hb (g/dl)	10.9 ± 0.9 (8.9–13.5)	10.3 ± 1.2 (7.6–15.9)	0.000
Hb category
>13	3 (4)	73 (51)	0.001
12–13	7 (10)	25 (7)
<12	61 (86)	249 (72)
Haematocrit (%)	34.0 ± 3.6 (27.9–49.9)	31.7 ± 3.6 (23.9–47)	0.001

MBLPA multimodal blood-loss prevention approach; Hb hemoglobin; BMI body mass index, ASA American Society of Anesthesiology, Hb haemoglobin, SD standard deviation