| Correlate as named by investigator | People investigated | |
| Finding | Urbanization | 14+ aged, general public EU nations 1979-1994 |
| Finding | Urbanisation | 15+ aged, general public, EU 14 member states, 1973-2001 |
| Finding | Degree of urbanization | 50+ aged, general public, 16 European nations, 2012 |
| Finding | % Urban population | Adults, general public, 48 nations, around 1990 |
| Finding | Urbanization | Adults, general public, 65 nations, 1995 and 1997 |
| Finding | Urban/rural | Working aged (20-69), Taiwan, 2003-2008 |