3.3 Floor effects and ceiling effects for the SSQOL and the SF-36 scales
Table 2 and Chart 1 show the distributions of floor effect rates of both scales. When the lowest scores of both scales were compared, any significant difference was not observed between distribution in dimensions of PF-PA (20% -2.9%; P = 0.096), VT-E (1.5%, 15.1%; p = 0.39) subdimensions (p> 0.05), while the floor effect rates of SF-SFR (; 9.8% -12.2%; p = 0.000 respectively), MH-M (0- 7.5%; p = 0.005) were found to be statistically significantly different. When ceiling effect rates of scales were compared PF-PA (5.4%-5.9%; p = 0.02), SF-SFR (13.2% -8.8%; p = 0.004), VT-E (2.4%, 13.7%; p = 0.019, respectively), any statistically significant difference was not found between the distributions of MH-M (2.0% -13.2%; p = 0.437,respectively).