Table 4: Results of Randomized Controlled Trials on Screening Mammography*.
| Trial | Mammo. Group/ Control No. women |
Follow-up, Years | Relative Risk (95% Confidence Interval) |
|---|---|---|---|
| HIP (5) | 14,432 / 14,701 | 18.0 | 0.78 (0.61–1.00) |
| Malmo (9) | 13,528 / 12,242 | 19.2 9.1 |
0.81 (0.66–1.00) 0.65 (0.39–1.08) |
| Two-County (10) | 19,844 / 15,604 | 20.0 17.4 |
0.59 (0.47–0.75) 0.89 (0.72–1.09) |
| Edinburgh (19) | 11,505 / 10,269 | 12.6 | 0.78 (0.62–0.97) |
| NBSS-1 (6) | 25,214 / 24,216 | 8.8-13.0 11.0-16.0 |
1.14 (0.83–1.56) 1.06 (0.80–1.40) |
| Stockholm (11;27) | 14,842 / 7,108 | 14.9 | 0.90 (0.63–1.28) |
| Gothenburg (12;13;28) | 11,724 / 14,217 | 13.3 | 0.78 (0.57–1.07) |