| Methods |
Randomised screening trial where the women not attending were classed as non‐RCT and compared with the RCT control group that were not invited to screening (until after the RCT was completed). The non‐RCT patients were not in the RCT because they did not turn up for screening. All cancers are registered with a central cancer registry. Diagnosis of breast cancer, age 40 to 65 years. No losses to follow up. |
| Data |
Characteristics of non‐RCT patients (non‐attenders) presented and compared to RCT control patients. RCT control patients were mean 54 years, 19943 women. Non‐RCT patients were mean 54 years, 7785 women. |
| Comparisons |
The RCT control arm was compared with the women invited to the RCT who did not participate in the screening (non‐RCT patients). |
| Outcomes |
For both comparison groups, information was collected from a registry. Patients were followed for an average of 4 years. Main outcome was breast cancer deaths. |
| Notes |
The experimental treatment was not significantly different from the control treatment. |
