Table 2. Demographic and smoking history data of the subjects included in the analyses, by region.
| North Europe | East Europe | South Europe | West Europe | Overall | |
|---|---|---|---|---|---|
| Countries, n | 6 | 3 | 3 | 5 | 17 |
| Centres, n | 15 | 5 | 19 | 14 | 53 |
| Subjects included, n | 18,255 | 5,013 | 19,179 | 7,781 | 50,228 |
| Females, n (%) | 9,927 (54.4) | 2,399 (47.9) | 8,716 (45.5) | 3,882 (49.9) | 24,924 (49.6) |
| Birth year * | 1958 (1940–1983) | 1961 (1940–1986) | 1964 (1948–1980) | 1961 (1943–1986) | 1962 (1942–1984) |
| Year of last interview * | 2008 (2002–2011) | 2008 (2007–2012) | 2001 (1998–2010) | 2008 (1991–2012) | 2008 (1998–2011) |
| Age at last interview (years) * | 50 (24–68) | 47 (22–67) | 38 (23–60) | 43 (22–66) | 43 (23–66) |
| Study, n (%) | |||||
| ECRHS clinical | 2,389 (13.1) | 214 (4.3) | 1,764 (9.2) | 3,263 (41.9) | 7,630 (15.2) |
| ECRHS-Italy | - | - | 1,808 (9.4) | - | 1,808 (3.6) |
| RHINE | 3,665 (20.1) | 364 (7.3) | - | - | 4,029 (8.0) |
| ISAYA | - | - | 8,788 (45.8) | - | 8,788 (17.5) |
| GEIRD | - | - | 5,873 (30.6) | - | 5,873 (11.7) |
| GA2LEN | 12,201 (66.8) | 4,435 (88.5) | 946 (4.9) | 4,518 (58.1) | 22,100 (44.0) |
| Quitters, n (%) | 10,224 (56.0) | 1,707 (34.1) | 6,854 (35.7) | 2,950 (37.9) | 21,735 (43.3) |
| Total person-years | 309,077 | 89,194 | 287,637 | 117,123 | 803,031 |
* median (5th-95th percentile)