i.v. PCA EA
Patients treated 108 (36.0%) 192 (64.0%)
Age [years]
average/median
standard deviation
minimum
maximum

73.1/74.0
6.8
54.0
88.0

74.2/74.0
6.4
54.0
88.0
BMI [kg m-2]
normal weight (18.5–25)
overweight (25.1–30)
obese (>30)

42 (39.6%)
47 (44.3%)
17(16.1%)

75 (39.0%)
100 (52.1%)
17 (8.9%)
ASA
- 1 (healthy)
- 2 (mild systemic disease)
- 3 and 4 (severe systemic disease with constant threat to life)

7 (6.5%)
60 (55.5%)
41 (38.0%)

21 (11.0%)
107 (56.0%)
63 (33.0%)
Table 1: Demographic distribution.