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).