Table 6.
The number of demographic criteria included in papers on different scales.
| Criteria | Country | State | County | City | Urban district | Total |
|---|---|---|---|---|---|---|
| Age | 3 | 8 | 16 | 6 | 16 | 49 |
| total pop | 3 | 1 | 4 | 1 | 1 | 10 |
| Urban pop | 0 | 8 | 3 | 3 | 0 | 14 |
| Household size | 1 | 0 | 1 | 0 | 5 | 7 |
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