National Hospital Discharge Survey, 2006

The 2006 National Hospital Discharge Survey (NHDS) collects
medical and demographic information annually from a sample of hospital
discharge records. Variables include patients' demographic
characteristics (sex, age, race, marital status), dates of admission
and discharge, source and type of admission, status at discharge,
final diagnoses, surgical and nonsurgical procedures, dates of
surgeries, and sources of payment. Information on hospital
characteristics such as bedsize, ownership, and region of the country
is also included. The medical information is coded using the
INTERNATIONAL CLASSIFICATION OF DISEASES, 9TH REVISION, CLINICAL
MODIFICATION (ICD-9-CM).

2006年国家医院出院调查（National Hospital Discharge Survey, NHDS）每年通过医院出院记录的抽样样本，采集医疗与人口统计学相关信息。其所涉及的变量包括患者人口统计学特征（性别、年龄、种族、婚姻状况）、入院与出院日期、入院来源与类型、出院时状态、最终诊断结果、手术与非手术操作、手术日期以及支付来源。此外，调查还收录了医院床位规模、所有制属性以及所在地区等医院特征信息。其中医疗信息采用《国际疾病分类第9版临床修订版（International Classification of Diseases, 9th Revision, Clinical Modification, ICD-9-CM）》进行编码。