The prevalence of depression in end-stage renal disease (ESRD) patients on hemodialysis has not been definitively determined. We examined the prevalence of depression and the sensitivity, specificity, positive, and negative likelihood ratios (+LR and -LR) of self-report scales using the physician-administered Structured Clinical Interview for Depression (SCID) as the comparison. Ninety-eight consecutive patients completed the Beck Depression Inventory (BDI) and the Center for Epidemiological Study of Depression (CESD) scales. A physician blinded to BDI and CESD scores administered the SCID. Receiver/responder operating characteristic curves determined the best BDI and CESD cutoffs for depression. Depressed patients had more co-morbidities and lower quality of life, P<0.05. The prevalence of depression by SCID was 26.5% and of major depression was 17.3%. The CESD cutoff with the best diagnostic accuracy was 18, with sensitivity 69% (95% confidence interval (CI) (51%, 87%)), specificity 83% (95% CI (74%, 92%)), positive predictive value (PPV) 60%, negative predictive value (NPV) 88%, +LR 4.14, and -LR 0.37. The best BDI cutoff was 14, with sensitivity 62% (95% CI (43%, 81%)), specificity 81% (95% CI (72%, 90%)), PPV 53%, NPV 85%, +LR 3.26, and -LR 0.47. Self-report scales have high +LR but low -LR for diagnosis of depression. When used for screening, the threshold for depression should be higher for ESRD compared with non-ESRD patients. Identifying depression using physician interview is important, given the low -LR of self-report scales.
Study results demonstrate that improvements in axial mobility and physical performance can be achieved with a 10-week exercise program for people in the early and midstages of PD.
This study examined inappropriate drug use defined by updated criteria among respondents in the second and third in-person waves of the Duke Established Populations for Epidemiologic Studies of the Elderly. Information about sociodemographics, health status, access to health care, and drug use was determined by in-home interviews. Drug use was coded for therapeutic class and appropriateness by applying explicit criteria. Among participants, 27% of the second and 22.5% of the third in-person wave took one or more inappropriate agents. Of these drugs, the most common therapeutic classes were central nervous system and cardiovascular. Longitudinal multivariate analyses found that persons taking several prescription drugs, those having continuity of care, those who previously took inappropriate drugs, and those with many health visits were most likely (p<0.05) to use inappropriate drugs. We conclude that inappropriate drug use is common among community-dwelling elderly.
Identifying the impact of inappropriate drug use may depend on the criteria applied. Further studies are needed that measure additional outcomes and use alternate measures of inappropriate drug use.
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