Table 1
Description of study population.
| Population | Study | Dutch* |
|---|---|---|
| Total N | 19,809 | 16,979,120 |
| Gender (% male) | 41.0 | 49.2 |
| Age (Mean – SD) | 59.1–14.3 | 41.5 – NA |
| 65+ (%) | 39.8 | 18.2 |
| Education (% higher educated**) | 33.8 | 23.6 |
| Country of birth (% Netherlands) | 94.0 | 77.9 |
| Chronic condition (%) | 76.1 | 30.3 |
| Employed (%) | 30.7 | 63.2 |

Figure 1
Flowchart of expert panel.
Table 2
Results of Factor Analyses.
| Confirmatory factor analysis | |
|---|---|
| Chi-squared/df | 75,706*/2612 |
| NFI | 0.644 |
| CFI | 0.652 |
| RMSEA | 0.082* |
| Exploratory factor analysis | |
| KMO | 0.966 |
[i] * p-value < 0.001, df = degrees of freedom, NFI = Normed Fit Index, CFI = Comparative Fit Analyses, RMSEA = Root Mean Square Error of Approximation, KMO = Kaiser-Meyer-Olkin.

Figure 2
Scree plot of exploratory factor analyses.
