A A A

There are differences in my intervention and control groups at pretest. Which can I do?

Share:
Whtasapp
主題討論

Hello! I’m Dr. MEL. Nice to meet you! I’m absolutely excited that we are going to start this beautiful learning journey together and I’m sure you will find it fruitful and fulfilling. Feel free to share your thoughts here!

最近的活動討論

Got questions? Simply post them and let’s discuss! 

討論:General
Natalie Nat
2020年8月13日
There are differences in my intervention and control groups at pretest. Which can I do?

There are differences in my intervention and control groups at the pretest. Which can I do?

Reply
Like
Share
Whtasapp
Apple
2020年8月13日

you're welcome!

回覆
Like
分享
Whtasapp
Natalie Nat
2020年8月13日

thanks a lot!

回覆
Like
分享
Whtasapp
Apple
2020年8月13日

Suppose you are pretty sure the assignment of intervention and control groups is random, and these observed differences are not correlated to the assignment process. In that case, you may collect the data about the differences and adjust them by controlling the related variables in multiple regression analysis. However, if you doubt that the observed difference may cause selection bias in the assignment process, you can re-assign the cases with a rigorous random assignment. If the re-assignment is impossible, for example, the intervention has been implemented, you should collect the data about the differences and adjust the data by matching or balancing before the final estimatio

回覆
Like
分享
Whtasapp
最新討論帖
更多的討論帖
How do community care services collaborate with other healthcare providers, social services, and community organizations to create a seamless and integrated care network for older adults in the community?
How do community care services collaborate with other healthcare providers, social services, and community organizations to create a seamless and integrated care network for older adults in the co ...
Hannah Fox
2025年7月11日
3個回覆,0個月前
Like
分享
Whtasapp
What are the mechanisms for assessing and monitoring the quality of community care services for older adults, ensuring adherence to standards and continuous improvement?
What are the mechanisms for assessing and monitoring the quality of community care services for older adults, ensuring adherence to standards and continuous improvement?
Lia Chen
2025年7月11日
3個回覆,0個月前
Like
分享
Whtasapp
How do community care services facilitate social engagement and combat social isolation among older adults through activities, support groups, or community events?
How do community care services facilitate social engagement and combat social isolation among older adults through activities, support groups, or community events?
Lia Chen
2025年7月11日
3個回覆,0個月前
Like
分享
Whtasapp
How do nursing care services support older adults with end-of-life care and palliative care needs, ensuring comfort, dignity, and emotional support for both older adults and their families?
How do nursing care services support older adults with end-of-life care and palliative care needs, ensuring comfort, dignity, and emotional support for both older adults and their families?
Autumn Taylor
2025年7月11日
3個回覆,0個月前
Like
分享
Whtasapp
精選討論帖
Hi, I realized that it seems the concept “outcome” is different from the term “output”. Taking the grandparent training project as an example, what is the “outcome’ referable?
Hi, I realized that it seems the concept "outcome" is different from the term "output". Taking the grandparent training project as an example, what is the “outcome’ referable?
CouldYip
2021年8月26日
7個回覆,47個月前
Like
分享
Whtasapp
I have designed a large-scale survey about the life satisfaction of low-income families in Hong Kong. Is it appropriate to use the electronic survey through mobile phones?
I have designed a large-scale survey about the life satisfaction of low-income families in Hong Kong. Is it appropriate to use the electronic survey through mobile phones?
Realistic
2021年8月20日
3個回覆,47個月前
Like
分享
Whtasapp
Questions about program evaluation and impact assessment (PE & IA)?
Dear MEL participants, Hello everyone! We are going to meet Prof. Aron Shlonsky this week (17&18 Oct). Do you have any problems or issues in program evaluation and impact assessment? Pleas ...
jml88min
2019年10月15日
0個回覆,69個月前
Like
分享
Whtasapp
Question about the programme evaluation
Can someone recommend me a basic guide book for programme evaluation? We are an NGO in mainland China and providing services for young drug abusers in rural China. We learnt about your pro ...
Jessica
2019年10月9日
4個回覆,69個月前
Like
分享
Whtasapp