Table 1.
Features of the population screened and the mammography examination*
| Population screened |
Features of mammography examination |
||||
|---|---|---|---|---|---|
| Study location (Ref.) | % of women less than 50 years of age |
No. of screening mammograms† |
No. of views | Year of mammogram‡ |
Single vs. double interpretation§ |
| North America | |||||
| British Columbia, Canada (21) | N/A | 11824 | 2 | 1988–1989 | S |
| California (22) | 61.7 | 29838 | 2 | 1985–1992 | S |
| Idaho (23) | N/A | 25788 | 2 | 1989–1990 | S |
| New Mexico (24) | 43.7 | 126 466 | 2 | 1991–1993 | S |
| North Carolina (25)‖ | 48 | 21716 | 2‖ | 1987 | D |
| Texas (26) | N/A | 12860 | 2 | 1999–2000 | S |
| Texas (27)‖ | N/A‖ | 64 459 | 1–2 | 1987 | S‖ |
| Virginia (28)‖ | N/A‖ | 21 141 | 2 | 1988–1991 | S |
| Other countries | |||||
| Australia (30) | 0 | N/A | 2 | 1988–1990 | D |
| Australia (31) | 19.5 | 7163 | 2 | 1988–1989 | D |
| Australia (29) | 23.3 | 76106 | 2 | 1989–1993 | D |
| Belgium (32) | 35.2 | 9215 | 2 | 1992–1994 | D |
| Belgium (33) | 0‖ | 16017 | 1 | 1989–1992 | D |
| Finland (34) | N/A | 1495 744 | 2 | 1987–1997 | D |
| France (35) | 0‖ | 40 535‖ | 1‖ | 1989–1992 | D |
| France (36) | 38.9 | 26026 | 2 | 1990–1992 | D |
| Greece (37)‖ | 37 | 22258 | 2 | 1989–1990 | D |
| Hong Kong (38) | 74 | 8504 | N/A | 1993–1995 | D |
| Ireland (40)‖ | 100 | 17903 | 2 | 1989–N/A | S‖ |
| Iceland (39)‖ | 46 | 5416 | 2 | 1987–1989 | D |
| Italy (41)‖ | 0 | 1813 | 2 | 1990–1992 | S‖ |
| Italy (43) | 0 | N/A | 2 | 1990–1993 | S |
| Italy (42) | 0‖ | 20149 | 2 | 1990–1992 | S |
| Luxembourg (44) | 0 | 16249 | 2 | 1994–1997 | D |
| Spain (47) | 21.5 | 48691 | 1–2 | 1990–1992 | S/D |
| Sweden (49,52) | 40.3 | 41761 | 1–2 | 1988–1990 | S/D |
| The Netherlands (45)‖ | 0 | 416 020 | 2 | 1990–1992 | D |
| Portugal (46)‖ | 23.3 | 27416 | 1 | 1990–1992‖ | D |
| Spain (48) | 27.6 | 78224 | 2 | 1992–N/A | D |
| United Kingdom (50)‖ | 0‖ | 5699 | 1–2 | 1995 | S‖ |
| United Kingdom (51) | 0 | 47975 | N/A | 1994–1999 | N/A |
| United Kingdom (13)‖ | 6.6‖ | 26193 | 2 | 1987–1991 | S/D |
*
Please see supplemental data online (available at http://jncicancerspectrum.oupjournals.org/jnci/content/vol95/issue18/) for additional information on the abstraction process for specific articles. N/A = not available.
†
The total number of screening mammograms is equal to the total number of women in all studies but three: New Mexico (n = 87 443), Virginia (n = 17 547), and Spain (n = 49 631).
‡
Reported year in which the mammograms were obtained.
§
S = Single interpretation for each mammogram; D = double interpretation for each mammogram; S/D = a combination of single and double interpretation.
‖
Some data were obtained via personal communication with author.