|  | Zero-part model |  | Count-part model | ||
---|---|---|---|---|---|---|
N | OR | 95% CI | N | RR | 95% CI | |
Origin area | ||||||
 Italya | ||||||
 HDCb | 48,256 | 0.23 | (0.22–0.24) | 8893 | 0.65 | (0.61–0.70) |
 Africa | 76,575 | 0.52 | (0.50–0.53) | 24,219 | 1.46 | (1.40–1.52) |
 Latin-America | 62,904 | 0.72 | (0.70–0.73) | 26,586 | 1.04 | (1.00–1.08) |
 Asia | 62,904 | 0.43 | (0.43–0.44) | 50,093 | 0.80 | (0.78–0.83) |
 Central-Eastern Europe | 213,961 | 0.55 | (0.54–0.55) | 83,619 | 0.96 | (0.93–0.98) |
Time-period | ||||||
 Pre-2008a | ||||||
 Post-2008 | 2,035,479 | 1.34 | (1.34–1.35) | 989,346 | 0.96 | (0.96–0.97) |
 N observations | 3,772,584 |  |  | 1,735,368 |  |  |