Hyperlipidaemia in general practice: three year follow up of an opportunistic screening project.
As part of the national lipid screening project 927 people with a plasma cholesterol level greater than 6.5 mM were detected by screening 4006 men and women aged 25-59 years. Three years later 801 of the 878 patients eligible for a follow-up study (91%) had been followed up at least once. The median number of follow-up visits was two. The bulk of the workload fell on the nursing staff. The mean decrease in cholesterol level was 8-14% in those receiving dietary advice only, 15-25% in those receiving additional drug treatment and 12% for all patients. A proportion of this decrease must be attributable to regression to the mean, loss to follow up when patients were doing well, and the patients' knowledge of their follow-up date. Data on a group of patients not attending for regular follow up suggest that regression to the mean could account for up to 7% of the cholesterol reduction observed. Screening for hyperlipidaemia in general practice is feasible when the necessary infrastructure is provided, but even with a fairly conservative protocol 3% of those screened received drug treatment.
Mann
J I
JI
University of Otago, Dunedin, New Zealand.
Morgan
B
B
Ball
M
M
Mant
D
D
Jones
L
L
Robertson
I
I
D000328:Adult; D004739:England; D005194:Family Practice; D005240:Feasibility Studies; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D006937:Hypercholesterolemia / Q000517:prevention & control* / Q000628:therapy; D008297:Male; D008403:Mass Screening; D008875:Middle Aged