3. End Result Hospital is examining the eff ect of high- and low-intensity rehabilitation for hip replacement patients. Patient mobility postreplacement is based on patient self-reports and is categorized as improved, no change, or diminished. High-intensity rehabilitation is a ten-week regime; low-intensity is four weeks. Are outcomes diff erent between the highand low-intensity groups?

Improved No Change Diminished Total Low-Intensity Rehab 121 22 12 155 High-Intensity Rehab 143 17 9 169 Total 264 39 21 324