The trade-off between parents' time with their own kids and market work, and its dependence on out-of-home day care is analyzed in a simultaneous equation framework. Economic incentives primarily work through decisions about market work, while the direct effects on time with children are weak. The results suggest that a change in the mother's working hours has less influence on the parents' time with their children than a change in the father's working hours. This would imply that a policy working to increase the time with people's own children should primarily influence the father's work hours. We also find that parents prefer joint activities with their children, and that out-of-home child care is not chosen as a substitute for own time with children. Copyright Springer-Verlag Berlin Heidelberg 2003JEL classification: D1, C5, J13, J22, Key words: Time-use, child care, family economics, simultaneous equation system, three-stage least squares, process benefits,

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State of the art lightscanning of the breast was tested against mammography in 2568 women in a Swedish multicenter study. The study was in two parts. One was in women with symptoms from the breasts (the clinical study) comprising 3178 examined breasts with 198 cancers; the other in asymptomatic women (the screening study) comprising 1909 examined breasts with 126 cancers. In women with symptoms from the breasts, lightscanning did not contribute to clinical examination and mammography. In the screening situation, it was poor to pick up small cancers. Mammography alone falsely diagnosed cancer in 6.9% of the patients whereas lightscan falsely diagnosed cancer in 19.1%. Lightscan was not better than mammography in young women. The study shows that lightscanning in its current form is inferior to standard mammography.