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In four of the five hospitals the protocol also included measurement of body weight and length. The present analysis includes 261 of the 316 patients (83%) from Reykjavik, Copenhagen, Uppsala and Tampere where height was measured to the nearest 0.5 cm, while weight was measured on a balance scale to the nearest 0.1 kg. BMI was calculated as weight (kg)/length (m)2. Assessments were made in the morning in a fasting state and within the first 48 h of admission.

在316位病人中261位病人自行測量身高體重數據與在醫院測量的誤差為可接受範圍

A structured interview protocol was used and patients were asked about smoking habits and social situation. Health status (quality of life) was assessed using the disease-specific St. George’s Respiratory Questionnaire (SGRQ). This questionnaire has tree components: symptoms, activity, impact and also a total score,20 higher scores indicate worse health status. Psychological status was assessed with the Hospital Anxiety and Depression Questionnaire (HAD), information on co-morbidity (diabetes and cardiovascular disease) was obtained from patient records. Spirometry was performed at discharge.

使用問卷調查病人的健康狀態，呼吸查詢表(SGRQ)是否有吸菸、糖尿病、心血管疾病及社經地位