Objectives: To assess the value of computerised decision support in the man
agement of chronic respiratory disease by comparing agreement between three
respiratory specialists, general practitioners (care coordinators), and de
cision support software.
Methods: Care guidelines for two chronic obstructive pulmonary disease proj
ects of the SA HealthPlus Coordinated Care Trial were formulated. Decision
support software, Care Plan On-Line (CPOL), was created to represent the in
tent of these guidelines via automated attention flags to appear in patient
s' electronic medical records. For a random sample of 20 patients with care
plans, decisions about the use of nine additional services (eg, smoking ce
ssation, pneumococcal vaccination) were compared between the respiratory sp
ecialists, the patients' GPs and the CPOL attention flags.
Results: Agreement among the specialists was at the lower end of moderate (
intraclass correlation coefficient [ICC], 0.48; 95% Cl, 0.39-0.56), with a
20% rate of contradictory decisions. Agreement with recommendations of spec
ialists was moderate to poor for GPs (kappa, 0.49; 95% Cl, 0.33-0.66) and m
oderate to good for CPOL (kappa, 0.72; 95% Cl, 0.55-0.90). CPOL agreement w
ith GPs was moderate to poor (kappa, 0.41; 95% Cl, 0.24-0.58). GPs were les
s likely than specialists or CPOL to decide in favour of an additional serv
ice (P < 0.001). CPOL was 87% accurate as an indicator of specialist decisi
ons. It gave a 16% false-positive rate according to specialist decisions, a
nd flagged 61% of decisions where GPs said No and specialists said Yes.
Conclusions: Automated decision support may provide GPs with improved acces
s to the intent of guidelines; however, further investigation is required.