Primary health centres (PHCs) nowadays have access to data feed-back through different sources. However, while some HCSs are constantly running improvement projects others don’t use feed-back data. A national system for the audit and feed-back, Primary Care Quality, is now introduced in Sweden. Increased knowledge aboutthe reasons behind the different use of audit and feed-back data at different PHCs would be helpful help to improve conditions for use of data for quality improvement. Focus group interviews were conducted with staff and management teams at primary care centres in Sweden during. Data was analysed using qualitative content analysis. Preliminary results are three main themes that describes different approaches to quality improvement in daily practice. Each theme represents a quality improvement strategy with specifik characteristics. The three themes can be described on an axis from simple to complicated to complex.