Table 3 Percentage of national and international papers in a U.S. and a European journal on "air pollution or particles and mortality" published in 1999–2000.
Type of paper | Epidemiology N papers (%) N citations | Eur Respir J N papers (%) N citations |
|---|---|---|
National | 17 (71) 53 | 10 (53) 18 |
(US) | 9 (38) 68 | 1 (5) 6 |
(other) | 8 (33) 37 | 9 (48) 18 |
International | 7 (29) 54 | 9 (48) 23 |
Inter-European | 1 (4) 16 | 6 (32) 25 |