Characteristics of the 174 patients enrolled in the study.

Values are arithmetic mean (standard deviation [SD]) or number (%). Percentages may not total 100% because of rounding.*The body mass index (BMI) is the weight in kilograms divided by the square of the height in meters.†Body circumferences were available for 80 patients in the short-bore MR group and 85 patients in the open MR group.‡Pain medication comprises regular use of cyclo-oxigenase inhibitors, acetaminophen, or opioids. Antidepressant medication comprises regular use of tricyclic antidepressants, selective serotonin reuptake inhibitors, or opipramol. Sedative medication comprises regular use of benzodiazepines or other sedatives.§The EuroQol (EQ-5D) is a self-report questionnaire for assessment of general health-related quality of life [30]. It includes a vertical visual analogue scale (EQ VAS) ranging from 0 (worst imaginable) to 100 (best imaginable) to rate the current state of health.

数据以算术均值（标准差[SD]）或例数（百分比）形式呈现。受四舍五入影响，百分比总和可能不为100。*体重指数（Body Mass Index, BMI）为以千克计的体重除以以米计的身高平方值。†短孔径磁共振（Magnetic Resonance, MR）组有80例患者、开放式磁共振组有85例患者具备身体围度测量数据。‡镇痛药物指常规使用环氧合酶抑制剂、对乙酰氨基酚或阿片类药物；抗抑郁药物指常规使用三环类抗抑郁药、选择性5-羟色胺再摄取抑制剂或奥匹哌醇；镇静药物指常规使用苯二氮䓬类药物或其他镇静剂。§欧洲五维健康量表（EuroQol, EQ-5D）是用于评估通用健康相关生命质量的自评问卷[30]，其包含一条垂直视觉模拟评分量表（EQ VAS），评分范围为0（最差可想象健康状态）至100（最佳可想象健康状态），用于评定当前健康状况。