Study design biases in pancreatic inflammatory diseases
- Giulia Martina Cavestro1,
- Alberto Mariani1,
- Satish K Singh2,
- Paolo Giorgio Arcidiacono1,
- Pier Alberto Testoni1
- 1Vita-Salute San Raffaele University Division of Gastroenterology and Gastrointestinal Endoscopy, Scientific Institute San Raffaele, Milano, Italy
- 2Section of Gastroenterology, Boston University School of Medicine and Boston Medical Center, Boston, Massachusetts, USA
- Correspondence to Dr Giulia Martina Cavestro, Vita-Salute San Raffaele University Division of Gastroenterology and Gastrointestinal Endoscopy, Scientific Institute San Raffaele, Via Olgettina 60 Milano, Italy;
Contributors All authors contributed as commentators.
- Accepted 21 March 2012
- Published Online First 1 June 2012
The recent report by Sadr-Azodi et al entitled ‘Cigarette smoking, smoking cessation and acute pancreatitis: a prospective population-based study,’1 suggests that smoking is an important risk factor for non-gallstone-related acute pancreatitis.
In this study, the examined populations consisted of participants from the Swedish Mammography Cohort (SMC) established between 1987 and 1990. A questionnaire pertaining to diet, body size and education was mailed to 90 303 women born between 1914 and 1948; 66 651 women (74%) returned the questionnaire. In 1997, all surviving participants (56 030) received a new expanded questionnaire regarding anthropometric and lifestyle factors, including smoking status: 38 988 women returned a completed questionnaire. In addition in 1997, a questionnaire identical to the one …