"The data for (us) are very useful ... This is especially important when evaluating the impact of interventions regarding alcohol or other areas, as the survey data are likely to provide an earlier indication than routine data sources."
Cold calls
| No. of working days/year | 250 | days |
| Working hours/day | 7.5 | hours |
| Total working hours/year | 1875 | hours |
| No. of purchase areas for office | 100 | areas |
| No. of potential suppliers for each area | 100 | suppliers |
| Average length of cold call (hours) | 0.1 | hours |
| Calls from each supplier/year | 2 | |
| Total potential call time/year | 2000 | hours |
| Actual time in year I would spend working if I took every call | -125 | hours |