Table 1 Comparison between the population selected for detailed review with the whole study population (n = 1642)
2006–2012 | |||
|---|---|---|---|
Review of patient medical records (n = 503) | No review of patient medical records (n = 1139) | p | |
Age (years) | 67 ± 9 | 67 ± 9 | 0.907 |
Sex M/F | 410/93 | 923/241 | 0.874 |