Background. There are increasing numbers of older African-Caribbeans in the
UK. Primary care staff often feel less confident about diagnosing depressi
on in this group. Screening instruments may assist in making diagnoses in c
ross-cultural consultations.
Objective. We aimed to determine the sensitivity and specificity of screeni
ng instruments for depression in older African-Caribbean people in Manchest
er, UK.
Methods. We carried out a two-stage study to compare three screening instru
ments for depression (Geriatric Depression Scale, Brief Assessment Schedule
Depression Cards, Caribbean Culture Specific Screen), with a computerized
diagnostic interview for mental health disorders in older adults (Geriatric
Mental State). The study was set in inner-city Manchester. The subjects we
re community-resident African-Caribbeans aged 60 years and over; 227 subjec
ts were approached. Of the 160 people screened, 130 agreed to diagnostic in
terview. The main outcome measures were Spearman correlation coefficients;
these were calculated between each screening instrument and the diagnostic
interview. Receiver-operating characteristic (ROC) curve analysis was used
to determine appropriate sensitivity and specificity for each instrument.
Results. The results for the largest subgroup, the Jamaicans (n = 96/130),
demonstrated highly significant correlations between screening instruments
and diagnostic interview (P < 0.001). Each instrument had a high sensitivit
y: Brief Assessment Schedule depression cards (cut-off greater than or equa
l to 6; sensitivity 90.9% (95% Cl 58.8-99.8), specificity 82.1% (95% Cl 74.
0-90.3)), Caribbean Culture Specific Screen (cut-off greater than or equal
to 6; sensitivity 90.9% (95% CI 58.8-99.8), specificity 74.1% (95% CI 64.8-
83.4)), and Geriatric Depression Scale (cut-off greater than or equal to 4;
sensitivity 100% (95% Cl 97.1-100), specificity 69.1% (95% Cl 59.6-79.2)).
Conclusions. These screening instruments demonstrate high sensitivity level
s, if an appropriate cut-off point is used. The culture-specific instrument
did not perform better than the traditional instruments. Health profession
als should approach the consultation in a culturally sensitive manner and u
se the validated instrument they are most familiar with.