Neurological PT Meta-Analysis Research

**ONLY NEED RESEARCH QUESTION** I'm seeking a well-defined, clinically relevant research question in the area of neurological physical therapy, specifically focused on stroke rehabilitation. This question should be suitable for a meta-analysis.

The research question should relate to the following outcome measures:
- Motor function recovery
- Cognitive improvements
- Quality of life

Ideal skills and experience:
- Strong background in physical therapy research
- Experience with meta-analysis
- Knowledge of stroke rehabilitation and relevant outcome measures
- Ability to formulate clear, impactful research questions

Please provide examples of previous work.