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Table 1 Study descriptions and detailed overview of investigated outcome and exposure variables from Fig. 1

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

  1. “X” = available, “-” = unavailable, A: Administrative data (structured data), C: Clinical data (structured and unstructured data), R: Registry data (structured data)