Ulstein Ingun, Wyller Torgeir Bruun, Engedal Knut
Norwegian Centre for Dementia Research, Department of Geriatric Medicine, Ullevaal University Hospital, Oslo, Norway.
Int J Geriatr Psychiatry. 2007 Mar;22(3):195-202. doi: 10.1002/gps.1660.
To compare the scores on the Relative Stress Scale (RSS) with those on the General Health Questionnaire (GHQ) and the Geriatric Depression Scale (GDS), and to establish a cut-off score for RSS in order to distinguish carers with symptoms of psychiatric disorders from those without.
One hundred and ninety-four carers of 194 patients suffering from dementia according to ICD-10 were included in the study. Burden of care was assessed by the 15-items RSS, and psychiatric symptoms by means of the GHQ-30 and the 30-items GDS. A case score above 5 on GHQ and above 13 on GDS were used to define carers with probable psychiatric morbidity. Sensitivity (SS), specificity (SP), accuracy and likelihood ratio for a positive test (LR+) were calculated for different cut-points of the RSS.
Fifty-six percent of the carers had a GHQ score above 5, and 22% had a GDS score above 13. A two-step cluster analysis using 192 of the 194 carers, identified three groups of carers; a low risk group for psychiatric morbidity (LRG), 82 carers with GHQ < or = 5 and GDS < or = 13; a medium risk group (MRG), 69 carers with GHQ > 5 and GDS < or = 13; and a high-risk group (HRG), 40 carers with GHQ > 5 and GDS > 13. The optimal RSS cut-off to distinguish between the LRG and the others was > 23 (SS 0.72, SP 0.82, accuracy 0.76, LR + 4.0), whereas the optimal cut-off to separate the HRG from the others was >30 (SS 0.74, SP 0.87, accuracy 0.84, LR + 5.7).
The RSS is a useful instrument to stratify carers according to their risk of psychiatric morbidity.
比较相对压力量表(RSS)得分与一般健康问卷(GHQ)及老年抑郁量表(GDS)得分,并确定RSS的临界值,以区分有精神障碍症状的照料者和无精神障碍症状的照料者。
根据国际疾病分类第10版(ICD - 10),194名痴呆患者的194名照料者纳入本研究。采用15项RSS评估照料负担,通过GHQ - 30和30项GDS评估精神症状。GHQ得分高于5分且GDS得分高于13分被用来定义可能存在精神疾病的照料者。针对RSS的不同切点计算敏感度(SS)、特异度(SP)、准确率和阳性试验似然比(LR +)。
56%的照料者GHQ得分高于5分,22%的照料者GDS得分高于13分。对194名照料者中的192名进行两步聚类分析,确定了三组照料者;精神疾病低风险组(LRG),82名照料者GHQ≤5且GDS≤13;中度风险组(MRG),69名照料者GHQ>5且GDS≤13;高风险组(HRG),40名照料者GHQ>5且GDS>13。区分LRG与其他组的最佳RSS临界值>23(SS 0.72,SP 0.82,准确率0.76,LR + 4.0),而将HRG与其他组区分开的最佳临界值>30(SS 0.74,SP 0.87,准确率0.84,LR + 5.7)。
RSS是一种根据照料者精神疾病发病风险进行分层的有用工具。