جستجوی مقالات مرتبط با کلیدواژه "بقای نسبی" در نشریات گروه "پزشکی"

Adenocarcinoma is the most common form of gastric cancer with relatively high mortality and morbidity in Iran. In this way, the aim of this study was to estimating postoperative net survival for patients with gastric Adenocarcinoma in Iran in the context of relative survival regarding its value and accuracy as a useful indicator.

Data analysis was performed on gastric adenocarcinoma patients undergoing curative surgical treatment followed by subsequent supplementary therapies in Imam Hospital in Tehran during the years 1995 to 1999 (follow up to 2004). While describing the data with frequency and life table, the net survival of 1- to 5-year was estimated via the multiple models based on the underlying factors using stata software.

Data of 281 patients with a mean age of 66.0 ± 10.8 (200 males and 81 females) with gastric Adenocarcinoma followed up for a maximum of 10 years was used. Among all 214 patients (76.2%) were diagnosed at stages 3 and 4 of the disease.Noticeably, the survival of 1- and 5- year for patients was 68.27 (95% CI: 62.17 -73.69) and 22.17 (95% CI: 16.39-28.63), respectively. The minimum amount for the specific survival rate was 77.76% for the time interval of 1 to 1.5 years.

The risk of death from this illness is more likely to occur within 1 to 2 years after surgery. While statistical healing can be considered to be from the seventh year onwards. Patients diagnosed at higher stages and who use less complementary therapies have less survival

In comparison with observed and cause-specific survival relative survival as an estimate of net survival has become a more preferred measure for the analysis of patients survival based on data from population-based-cancer registries. A major advantage of this measure is that information on the cause of death is not required thereby circumventing problems with the inaccuracy incorrectness and non-availability of death certificates and problems due to complicated cures. This research is carried out to estimate and investigate the net survival of breast cancer patients. In order to estimate relative survival we used Finnish annual probabilities of death as a standard source to estimate expected survival in this study. Data consist of 662 breast cancer patients diagnosed at the Cancer Institute of Imam Khomeini Hospital during 1990-95 and followed up to the end of 2000. Data were analyzed using SAS software version 9.1. The results showed that the three-year relative survival for 3 age groups of 15-44 45-59 and 60-74 were 85 90 and 80% respectively whereas it was low for the age group of 75+ (67%). Following up the age group of 45-59 for two consequent years the estimate of relative survival ratio was obtained approximately one. For some intervals the follow-up estimate of relative survival was greater than one. Based on the results survival following diagnosis of cancer has decreased with the increasing of age groups. It is also seen that with the increasing years of follow-up survival following diagnosis of cancer has first decreased and then a little increased. The decreasing rate for age group of 75+ is noticeable. The statistical cure point for the age group of 45-59 is acceptable but for the age groups of 45-59 and 60-74 the quality of following up is low in some follow-up intervals.