[Interobserver reliability of the International Classification of Primary Care].
OBJECTIVE
The International Classification of Primary Care was developed as an attempt to overcome the limitations of the International Statistical Classification of Diseases and Related Health Problems, 10th revision, when used for primary health care. The aim of the study was to evaluate the interobserver reliability of the International Classification for Primary Care when coding reasons for health-related interruption of daily activities.


METHODS
Data analyzed pertained to 801 subjects from Phase 2 of the Pró-Saúde Study, involving the employees of a Rio de Janeiro university who reported having been prevented from carrying out any of their usual activities (work, study, or leisure) for health-related reasons in the two weeks prior to data collection. Health problems reported in response to an open question were separately coded by two classifiers. Interobserver reliability with respect to number of health problems was calculated by weighted kappa; for the remaining analyses (chapters and full codes), crude kappa coefficients were used.


RESULTS
A total of 1,641 health problems were coded by the first classifier, and 1,629 by the second. Interobserver reliability with respect to the number of health problems coded was substantial (weighted kappa=0.94; 95% CI: 0.93;0.94). Chapter and full codes showed substantial (kappa=0.89; 95% CI: 0.88;0.90) and moderate (0.76; 95% CI: 0.76;0.78) reliability, respectively.


CONCLUSIONS
The results suggest that the International Classification of Primary Care is adequate for the coding of health-related reasons for interruption of daily activities.
Sampaio
Mariana Miranda Autran
MM
Instituto de Medicina Social, Universidade Estadual do Rio de Janeiro, Rua São Francesco Xavier 524, Rio de Janeiro, RJ, Brazil. m.autran@gmail.com
Coeli
Cláudia Medina
CM
de Miranda
Nair Navarro
NN
Faerstein
Eduardo
E
Werneck
Guilherme Loureiro
GL
Chor
Dora
D
Lopes
Cláudia S
CS
D015331:Cohort Studies; D003953:Diagnosis-Related Groups / Q000145:classification*; D005260:Female; D006801:Humans; D038801:International Classification of Diseases; D038622:Internationality; D008297:Male; D015588:Observer Variation; D011320:Primary Health Care / Q000145:classification*; D015203:Reproducibility of Results