[Evaluation of the cancer co-pay fee exemption data source (048 code) to estimate cancer incidence]. / Valutazione del flusso delle esenzioni ticket per neoplasia (codice 048) per stimare l'incidenza dei tumori.

OBJECTIVES: to assess whether the data source of cancer exemption ticket (code 048) correctly estimate the cancer incidence produced by Cancer registries (CR). DESIGN: comparison between incidence estimates produced by cancer exemptions ticket and cases registered by CR. SETTING AND PARTICIPANTS: six CRs provided incidence data for one year in the five-year period from 2007 to 2011 and for the previous five years, the exemptions provided for the same year and for the previous five years. MAIN OUTCOME MEASURES: incidence distribution by gender, age and tumour site, exemptions 048/incident cancers ratio, and trend estimates. RESULTS: out of 14,586 patients with 048 exemption, a first group was present in the CR database in the same reference year (No. 8,015) and a second group in the previous 6 months (No. 1,696). Of the remaining 4,875, only 2,771 were prevalent cases and 2,104 were manually re-valued: 514 non-cancer; 710 non-malignant/noninfiltrating tumours, 250 non-residents, 532 unknown, and 98 lost at CR. The exemption/ tumours ratio was 32%in males and 37% in females. Out of 27,632 cancer patients in CR, only 29% had a 048 exemption. Among linked cases, there is a case-mix problem: the exemptions overestimated the weight of some cancer sites (breast, prostate), but underestimate the weight of other sites (stomach, liver, lung) and the burden of tumours in the elderly.The trend estimated from the exemptions underestimates the true incidence of tumours and presents fluctuations, because of local administrative and organisational issues. CONCLUSIONS: the 048 codes are an accessory source for CRs, but when used as single flow they are not able to estimate the true incidence of tumours and, therefore, do not provide useful information on cancer trends.

The combined effect of age and socio-economic status on breast cancer survival.

The study aims to investigate the effect of age and socio-economic status (SES) on breast cancer relative survival at 5 years from diagnosis (RS-5%). The Liguria Region Cancer Registry collected clinico-pathological information for 1081 patients resident in Genoa city diagnosed in 1996 and 2000. Patients were divided into three age groups (0-49, 50-69 and ≥70 years) and into quintiles of SES, measured according to a synthetic regional deprivation index built by Census tract variables and validated by comparison with the national deprivation index. The association of prognostic factors and RS-5% was evaluated by bivariate and multivariate analyses. RS-5% was very high for the first two age groups (91%) and decreased in patients aged 70 or older (82%) (unadjusted HR=2.7, P=0.001). The first four SES quintiles had homogeneous RS-5% (89-92%) and only the last very deprived group had lower rates (77%) (unadjusted HR=2.3, P=0.011). Very deprived elderly patients showed a much lower RS-5% (58%). Elderly and very deprived women were more likely to have large tumours, positive lymph nodes and less likely to receive conserving surgery, axillary dissection and adjuvant therapies. After adjusting for tumour characteristics and treatment modalities the increased risk of dying in the elderly disappeared completely, while the higher risk of very deprived women was eliminated only after correction for all the covariates simultaneously. The survival observed for breast cancer patients resident in Genoa was very high, however elderly and very low SES women have to be monitored. These variations are probably due to inequity in healthcare access and to a difficult taken in charge.