How to assess attrition bias or dropped out patients in randomized controlled clinical trials?

Essam A. Al-Moraissi @Essam-Al-Moraissi

01 January 1970 0 8K Report

In assessing randomized control clinical trials (RCTs) in respect of attrition bias. We have 7 or more cases

1. the RCT mentioned there was dropped out with clearly notification for reasons of the dropped out or exclusion .

2. RCT stated there was no dropped out

3. RCT dose not state anything about the dropped out patients

5. RCT stated there was a dropped out but they perfomed an intention to treat analysis

6. RCT stated there was dropped out at the begining of the study

7, RCT stated there was dropped out at the end of long follow up time.

How could we rate the above option ?

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