|
Demographic features |
||||
| Group I |
Group II |
Group III |
||
|
|
||||
| Number of patients |
201 |
446 |
509 |
|
| Number of procedures |
330 |
662 |
827 |
|
| Age [yrs] [mean ± SEM ] |
52 ± 1.1 |
50 ± 0.7 |
50 ± 0.6 |
|
| Gender |
||||
| Male |
40% [81] |
33% [146] |
34% [175] |
|
| Female |
60% [119] |
67% [300] |
66% [334] |
|
| Body mass index [mean ± SEM] |
29.4 ± 0.56 |
29.1 ± 0.37 |
28.6 ± 0.31 |
|
Manchikanti et al. BMC Anesthesiology 2003 3:2 doi:10.1186/1471-2253-3-2 |
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