Figure 1From: Health related quality of life after extremely preterm birth: a matched controlled cohort study Mean CHQ-PF 50a) scores in matched pair data for 10 year old children born extremely preterm and controls born at term, according to gender. a) Child Health Questionnaire-Parent Form 50; scale range 0-100 (except summary scores = norm based values with mean of 50 and standard deviation of 10).Back to article page