Table 21 Characteristics of included studies- small intestine neuroendocrine tumors
From: Associations between aspirin use and the risk of cancers: a meta-analysis of observational studies
Study source | Sex | Study period | Source of subjects | No of case | No of control/cohort size | Cancer site | Exposure assessment | Exposure Definition | Adjustment for covariates | Study quality |
|---|---|---|---|---|---|---|---|---|---|---|
Case-control studies | ||||||||||
 Rinzivillo M [260], 2016, Italy | M/F | 2009–2012 | Population from Universities of Rome and Bologna and at the European Institute of Oncology | 215 | 860 | Small Intestine Neuroendocrine Tumors | Questionnaire | Use at any dose at least twice a week for more than one consecutive year | 1,2, | 7 |