Patients were followed between 09/2001-09/2010 for the first and cumulative return visits for UCP or cardiac pain (ACS or angina) to clinic, emergency department or admission; or for all-cause death.
Negative binomial regression comparing cumulative return visits for chest pain for the duration of follow up revealed that patients with UCP were 58%% more likely to return for any chest pain (Rate Ratio = 1.58; 95 % CI 1.47-1.71) and 2.6 times more likely to return with unexplained chest pain than the reference group (Rate Ratio = 2.63; 95 % CI 2.43-2.87) (Table 2).
That is, at each visit, the cumulative number of visits with NW = 1 was divided by the number of years that subjects had been in the study.
Cumulative emergency visit free time among asthma patients was stratified according to their smoking status and adjusted for age, gender, duration of disease, FEV1 of predicted, chronic sinusitis, and the number of co-morbidities.
Inferences about populations are based on 1 of 2 measures: (1) change in the proportion of stations visited at least once or (2) change in the cumulative number of visits by unique individuals.
Patients exceeding this cumulative dose between visits were discontinued as having an unsatisfactory therapeutic effect.
Univariate analysis of variance was used to test the effect of group, risk category, and their interaction effect on DMF, I+DMFS, the number of sealants, and the cumulative number of visits at the age of 12 years, as well as on the estimated running costs from 5 to 12 years of age.
Cox regression analyses were used to relate cardiovascular death/hospitalization, doubling of serum creatinine/end-stage renal disease, overall hospitalization, and all-cause death to depressive affect evaluated at baseline, the most recent annual visit (time-varying), or average from baseline to the most recent visit (cumulative).
Fig. 2 Cumulative percentage of visited physicians for headache.
Per 100 patients, the 1-year cumulative returns were 37 visits for reference group and 45 visits for UCP cohort.
