SWEOLD - Undersökningen om äldre personers levnadsvillkor

SWEOLD is a nationally representative survey of the older population in Sweden. The sample consists of individuals previously included in the selection of Swedish Level of...SWEOLD是一项针对瑞典老年人群体的具有全国代表性的调查。其样本由此前入选瑞典（Swedish Level of...）遴选流程的个体组成。