<qa>  What is the performance level of Karnofsky?- Performance Level: Karnofsky greater than or equal to 50 for patients 10 years of age and Lansky greater than or equal to 50 for patients less than or equal to 10 years of age Appendix IV. Note: Patients who are unable to walk because of paralysis, but who are up in a wheelchair, will be considered ambulatory for the purpose of assessing the performance score. 