The DLQI is well suited for use in large-scale epidemiological studies as it is easily completed without the need for detailed instructions. Used in a recent survey of patients with ichthyosis in Sweden (Ganemo et al., 2004), significant differences of QoL scores were seen between major ichthyosis types. QoL measures can be used sequentially in long-term studies to assess the longer-term impact of disease, as illustrated by the recent study in Australia (Jenner et al., 2004). Patients with atopic dermatitis were assessed in a 1-year prospective study: this study highlighted substantial financial and other effects on patients.
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