Inverse association between nonsteroidal anti-inflammatory drugs and prostate cancer. García Rodríguez, L. A. & González-Pérez, A. Cancer Epidemiology, Biomarkers & Prevention: A Publication of the American Association for Cancer Research, Cosponsored by the American Society of Preventive Oncology, 13(4):649--653, April, 2004.
abstract   bibtex   
BACKGROUND: Prostate cancer is considered a major health problem in western countries. Promising results from observational studies on cancer at other sites fuelled the publication of several studies assessing the association between nonsteroidal anti-inflammatory drug (NSAID) use and prostate cancer. However, these studies show conflicting results. METHODS: We conducted a cohort study with a nested case-control analysis to further study the association between NSAIDs and prostate cancer. We used data from the General Practice Research Database in United Kingdom. RESULTS: Aspirin use was associated with a reduced risk of prostate cancer [odds ratio (OR) = 0.70, 95% confidence interval (95% CI) = 0.61-0.79]. We also found that paracetamol use with a treatment duration longer than 1 year was associated with a decreased risk (OR = 0.65, 95% CI = 0.54-0.78). Non-aspirin-NSAID (NA-NSAID) and paracetamol short-term use was associated with a small increased risk whereas long-term users of NA-NSAIDs presented an OR of 0.89 (95% CI = 0.73-1.08). DISCUSSION: Our findings support a protective effect of aspirin and paracetamol against prostate cancer. The transient elevated risk observed among newly started users of NA-NSAIDs and paracetamol is most likely explained by prothopathic bias. We found some suggestion of a reduced risk with long-term use of NA-NSAID.
@article{garcia_rodriguez_inverse_2004,
	title = {Inverse association between nonsteroidal anti-inflammatory drugs and prostate cancer},
	volume = {13},
	issn = {1055-9965},
	abstract = {BACKGROUND: Prostate cancer is considered a major health problem in western countries. Promising results from observational studies on cancer at other sites fuelled the publication of several studies assessing the association between nonsteroidal anti-inflammatory drug (NSAID) use and prostate cancer. However, these studies show conflicting results.
METHODS: We conducted a cohort study with a nested case-control analysis to further study the association between NSAIDs and prostate cancer. We used data from the General Practice Research Database in United Kingdom.
RESULTS: Aspirin use was associated with a reduced risk of prostate cancer [odds ratio (OR) = 0.70, 95\% confidence interval (95\% CI) = 0.61-0.79]. We also found that paracetamol use with a treatment duration longer than 1 year was associated with a decreased risk (OR = 0.65, 95\% CI = 0.54-0.78). Non-aspirin-NSAID (NA-NSAID) and paracetamol short-term use was associated with a small increased risk whereas long-term users of NA-NSAIDs presented an OR of 0.89 (95\% CI = 0.73-1.08).
DISCUSSION: Our findings support a protective effect of aspirin and paracetamol against prostate cancer. The transient elevated risk observed among newly started users of NA-NSAIDs and paracetamol is most likely explained by prothopathic bias. We found some suggestion of a reduced risk with long-term use of NA-NSAID.},
	language = {eng},
	number = {4},
	journal = {Cancer Epidemiology, Biomarkers \& Prevention: A Publication of the American Association for Cancer Research, Cosponsored by the American Society of Preventive Oncology},
	author = {García Rodríguez, Luis A. and González-Pérez, Antonio},
	month = apr,
	year = {2004},
	pmid = {15066932},
	keywords = {Acetaminophen, Aged, Anti-Inflammatory Agents, Non-Steroidal, Aspirin, Case-Control Studies, Cohort Studies, Databases, Factual, Great Britain, Humans, Male, Middle Aged, Prostatic Neoplasms, Risk Factors},
	pages = {649--653}
}

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