From: Feasibility analysis of conducting observational studies with the electronic health record
1. DPS study | Exposure | A | C | Outcome | A | C | ||
Assessing the relationship between typical risk factors and the severity of Dupuytren’s contracture N = 411 | ||||||||
Comorbidities | Epilepsy Diabetes mellitus | X | – | Classifications | Iselin | – | X | |
Lifestyle | Alcohol Smoking | X | – | |||||
Demography | Sex | X | – | Classifications | Iselin at initial or recurrent diagnosis of Dupuytren’s contracture | – | X | |
Demography | Mean age at initial or recurrent diagnosis of Dupuytren’s contracture | X | – | |||||
Classifications | Iselin (stage of Dupuytren’s contracture) | – | X | Complications | Postoperative Intraoperative | X | X | |
2. DG study | Exposure | A | C | Outcome | A | C | ||
Perforation numbers after endoscopic esophageal balloon dilatation and bougination N = 423 | Perforation | Perforation No Perforation | X | – | Length of hospital stay | X | – | |
3. DRO study | Exposure | A | C/R | Outcome | A | C/R | ||
Comparison of two radiochemotherapies protocols in locally advanced pancreatic cancer N = 13 | Radiotherapy Chemotherapy | Radiotherapy + Gemcitabine and cisplatin | X | X | Classifications | Common toxicity criteria | – | – |
Radiotherapy + 5-Fluororuacil and mitomycin C | – | – | Death | X | – | |||
Additive chemotherapy | X | X | Death | X | – |