Table 1 Demographics of cohorts
| CLP (n = 55) | CLF (n = 26) | P |
|---|
| Age (y)* | 63 ± 13 | 60 ± 9 | .2 |
| Gender | | | .3 |
| Male | 39 | 15 | |
| Female | 16 | 11 | |
| Length of stay (d)* | 3.7 ± 2.2 | 5.9 ± 3.2 | <.01† |
| Insurance | | | 1 |
| Non-Medicare | 31 (56%) | 15 (58%) | |
| Medicare | 24 (44%) | 11 (42%) | |
| Previous surgery | 4 | 5 | .1 |
| No. levels decompressed* | 6 ± 1 | 4.7 ± 0.6 | <.01† |