| Study | | | 95% CI | Adjusted rate* | Person* year | Crude rate | LL | UL |
| Stockholm | 4,712,240 | 15.56 | 14.43 | 16.68 | 17.25 | Benghazi | 158,348 | 39.79 | 29.96 | 49.61 | 48.51 | Lund-Orup | 97,283 | 9.25 | 3.21 | 15.30 | 9.28 | Denmark | 13,144,499 | 14.94 | 14.28 | 15.60 | 11.21 | Dijon | 75,880 | 26.36 | 14.81 | 37.91 | 31.42 | Florence | 531,597 | 8.84 | 6.31 | 11.37 | 8.88 | OCSP | 226,936 | 9.64 | 5.60 | 13.68 | 9.74 | Russia† | 350,432 | 19.12 | 14.54 | 23.70 | 19.13 | Baltimore whites | 388,532 | 13.64 | 9.97 | 17.31 | 14.14 | Baltimore blacks | 272,464 | 30.83 | 24.24 | 37.42 | 34.20 | Reggio Emilia | 212,646 | 13.64 | 8.67 | 18.60 | 13.95 | Aosta 1988 | 67,784 | 13.28 | 4.60 | 21.95 | 13.26 | Rochester | 1,297,209 | 8.63 | 7.03 | 10.23 | 14.21 | Malmö† | 127,581 | 11.76 | 5.81 | 17.71 | 10.06 | Israel | 2,170,500 | 5.76 | 4.75 | 6.77 | 6.14 | Auckland | 456,667 | 20.15 | 16.03 | 24.26 | 21.02 | Perth | 93,086 | 20.41 | 11.23 | 29.59 | 13.83 | Warsaw | 230,108 | 16.51 | 11.26 | 21.76 | 13.51 | Belluno | 126,513 | 10.28 | 4.69 | 15.86 | 16.70 | Innherred† | 73,862 | 12.18 | 4.22 | 20.15 | 12.02 | Northern Sweden | 774,608 | 11.36 | 8.99 | 13.73 | 11.17 | South London | 327,384 | 10.69 | 7.15 | 14.23 | 11.48 | L'Aquila | 874,375 | 10.18 | 8.06 | 12.29 | 10.23 | OXVASC | 178,071 | 8.99 | 4.58 | 13.39 | 13.12 | Erlangen | 62,453 | 16.01 | 6.09 | 25.94 | 14.58 | Northen Manhattan† | 321,739 | 23.00 | 17.76 | 28.24 | 23.03 | Aosta 1997† | 66,698 | 16.49 | 6.75 | 26.24 | 16.38 | Melbourne | 84,888 | 20.03 | 10.51 | 29.55 | 19.25 | Brazil | 844,378 | 11.55 | 9.26 | 13.85 | 8.70 |
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