Figure 1

Distribution of symptoms. All symptoms are coded once only. Pain: includes musculoskeletal, abdominal, chest and other; Infections: include throat, chest, common cold, flu (like symptoms), mouth sores, skin infections and other; Stomach/bowel: nausea, vomiting, bloated, indigestion, diarrhoea and other; Bruising/bleeding: includes nosebleeds, bleeding from bowel/stomach, gums/mouth and other; Cardiovascular: includes abnormal blood pressure, abnormal heart beat, stroke, deep vein thrombosis and other.