Table 2.
Data dictionary for the variables used in the study
| Description | Codes/Values |
|---|---|
| Waiting time from registration to surgery |
Integer for number of days |
| Education (at surgery time) |
Primary school or less (LOW) |
| |
Middle school (MIDDLE) |
| |
Upper secondary school or higher education (HIGH) |
| Gender |
Male |
| |
Female |
| Age groups (at surgery) |
<= 54 |
| |
55-64 |
| |
65-74 |
| |
> = 75 |
| Year of registration |
<2006 |
| |
2006 |
| |
2007 |
| |
2008 |
| CCI |
0,1,or 2 (≥2) |
| LHA/HT | LHA- City of Turin; LHA - Western Piedmont; LHA - Northern Piedmont; LHA - Southern Piedmont; LHA - Eastern Piedmont; HT - City of Turin; HT - Piedmont Region; Other Hospitals. |