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Collin-Bagewitz I, Söderfeldt B et al. Acta Odont Scand 2005; 63: 353–360

QoL is defined in a variety of ways. OHRQoL was studied in a 22 item questionnaire sent to a random sample of 2000 persons aged 50-75 in a Swedish county. The response rate was 66%. Questions centred around psychological discomfort and disability, functional limitation, social disability and physical pain.

Between 62% and 94% of the subjects were satisfied with their condition in response to the different questions. Principal component analysis identified 3 factors which accounted for 59% of the variance in answers. These were interpreted by the authors as physical and social disability, psychological discomfort and disability, and functional limitation and physical pain. The authors aim to explore these factors in future studies to see whether they result from different mechanisms and processes.