Quality of life is multifactorial, but may not be adequately assessed using existing validated health measures. The Mother-Generated Index, a subjective tool to measure postnatal quality of life, was assessed in a study of 102 women in Tayside, Scotland. They specified the most important areas of their lives having had a baby, and scored these. The Index showed good correlation with established measures of physical and psychological wellbeing, and accurately tracked attitudes towards the baby and the partner. Face, criterion and construct validity were all demonstrated. As both content and scoring are subjectively determined, the Index encourages a holistic assessment.