The Iranian Study of Opium and Cancer (IROPICAN): Rationale, Design, and Initial Findings.

BACKGROUND: The International Agency for Research on Cancer (IARC) recently classified opium use as a Group 1 carcinogen. However, much remains to be studied on the relation between opium and cancer. We designed the Iranian Opium and Cancer (IROPICAN) study to further investigate the association of opium use and cancers of the head and neck, bladder, lung, and colon and rectum. In this paper, we describe the rationale, design, and some initial results of the IROPICAN Study. METHODS: The IROPICAN is a multi-center case-control study conducted in 10 provinces of Iran. The cases were all histologically confirmed and the controls were selected from hospital visitors who were free of cancer, were not family members or friends of the cancer patients, and were visiting the hospital for reasons other than their own ailment. The questionnaires included detailed questions on opium use (including age at initiation, duration, frequency, typical amount, and route), and potential confounders, such as tobacco use (e.g., cigarettes, nass and water-pipe), and dietary factors. Biological samples, including blood and saliva, were also collected. RESULTS: The validation and pilot phases showed reasonably good validity, with sensitivities of 70% and 69% for the cases and controls, respectively, in reporting opium use. The results also showed excellent reliability, with intra-class correlation coefficients of 0.96 for ever opium use and 0.88 (95% CI: 0.80, 0.92) for regular opium use. In the main phase, we recruited 3299 cancer cases (99% response rate) and 3477 hospital visitor controls (89% response rate). The proportion of ever-use of opium was 40% among cases and 18% among controls. CONCLUSION: The IROPICAN study will serve as a major resource in studies addressing the effect of opium on risk of cancers of the head and neck, bladder, lung, and colon and rectum.

Breast cancer patients' information needs and information-seeking behavior in a developing country.

UNLABELLED: Breast cancer is the most common cancer in women both around the world and in Iran. By studying the information needs of patients with breast cancer, the quality of the information provided for them can be improved. This study investigated the information needs of breast cancer patients and their information-seeking behavior. METHODS: This cross-sectional study was conducted from March to June, 2015. The research population was 120 women diagnosed with breast cancer and informed about their disease who referred to oncology outpatient clinics at a specialized cancer hospital and a radiotherapy oncology center in Mashhad (the only specialized cancer centers in eastern and northeastern Iran). RESULTS: Average participant age was 46.2 years (SD = 9.9). Eighty-five percent of patients desired more information about their disease. Results showed that the attending physician (mean = 3.76), television health channel (mean = 3.30), and other patients (mean = 3.06) were the most popular sources of information for breast cancer patients. Patients stated their strongest reasons for using information sources as achieving a better understanding of the disease (mean = 3.59), less anxiety (mean = 3.92), and curiosity to learn more about the disease (mean = 3.66), sequentially. Results further indicated that disease management (mean = 4.18) and nutritional options during treatment (mean = 4.14) were the most often mentioned areas in which patients required information, while knowing the progress rate of their disease was the least (mean = 3.73). CONCLUSION: It seems necessary to have a good, organized plan to provide breast cancer patients with information and increase their information literacy, one of their undeniable rights.