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Outline of Questionnaire
| Survey Year | 2006 | 2009 | 2012 |
|---|---|---|---|
| Number of participating facilities | 51 | 50 | 56 |
| Number of patient questionnaires | 664 | 813 | 682 |
| Sex, male/female | 312/352 | 380/433 | 321/361 |
| Median age (range), years | 68 (15–100) | 69 (15–94) | 70 (15–97) |
| Number of RSs/GPs | 268/396 | 411/402 | 280/402 |
Abbreviations: RS, respiratory specialist; GP, general practitioner.
