Hereditary Haemorrhagic Telangiectasia Flight Safety Study

Individuals with Hereditary Haemorrhagic Telangiectasia (HHT) previously reviewed at HHTIC London will be sent an invitation to participate in a short questionnaire study. Quantitative variables from the questionnaires for statistical analysis will be the number of individuals responding (and number of questionnaires sent out); number of flights taken and number of complications, subgrouped by type, and flight duration in hours. Complication rates will be expressed as proportion of person flight hours. The quantitative data from the questionnaire will then be compared with quantitative data from patients' medical records using non parametric methods such as Mann Whitney for univariate analyses.