Cochrane Db Syst Rev
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Among women with early breast cancer, the effects of ovarian ablation on recurrence and death have been assessed by several randomised trials that now have long follow-up. ⋯ In women aged under 50 with early breast cancer, ablation of functioning ovaries significantly improves long-term survival, at least in the absence of chemotherapy. Further randomised evidence is needed on the additional effects of ovarian ablation in the presence of other adjuvant treatments, and to assess the relevance of hormone-receptor measurements.
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Quit and Win contests were developed in the 1980s by the Minnesota Heart Health Program, and have been widely used since then as a population-based smoking cessation intervention at local, national and international level. Since 1994 an international contest has been held every two years in as many as 80 countries (2002). ⋯ Quit and win contests at local and regional level appear to deliver quit rates above baseline community rates, although the population impact of the contests seems to be relatively low. Contests may be subject to levels of deception which could compromise the validity of the intervention. International contests may prove to be an effective mechanism, particularly in developing countries, but a lack of well-designed comparative studies precludes any firm conclusions.
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The long-term effects of radiotherapy on mortality from breast cancer and other causes remain uncertain. ⋯ Radiotherapy regimens able to produce the two-thirds reduction in local recurrence seen in these trials, but without long-term hazard, would be expected to produce an absolute increase in 20-year survival of about 2-4% (except for women at particularly low risk of local recurrence). The average hazard seen in these trials would, however, reduce this 20-year survival benefit in young women and reverse it in older women.
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Cochrane Db Syst Rev · Oct 2008
ReviewCare home versus hospital and own home environments for rehabilitation of older people.
Rehabilitation for older people has acquired an increasingly important profile for both policy-makers and service providers within health and social care agencies. This has generated an increased interest in the use of alternative care environments including care home environments. Yet, there appears to be limited evidence on which to base decisions.This review is the first update of the Cochrane review which was published in 2003. ⋯ There is insufficient evidence to compare the effects of care home environments versus hospital environments or own home environments on older persons rehabilitation outcomes. Although the authors acknowledge that absence of effect is not no effect. There are three main reasons; the first is that the description and specification of the environment is often not clear; secondly, the components of the rehabilitation system within the given environments are not adequately specified and; thirdly, when the components are clearly specified they demonstrate that the control and intervention sites are not comparable with respect to the methodological criteria specified by Cochrane EPOC group. The combined effect of these factors resulted in the comparability between intervention and control groups being very weak.