TABLE 3

Results of the Linear Contrasts of Consecutive Year Pairs (2006 With 2008 and 2008 With 2010)

LPTAHPTAAny Frequency
AnyBilateralUnilateralAnyBilateralUnilateralAnyBilateralUnilateral
121212121212121212
Threshold >15 dB
 χ20.2720.730.120.9262.3413.0470.0210.8410.1190.0630.1430.5980.4438.1120.0093.1751.5092.763
 P.602.393.729.336.126.081.884.359.731.802.706.439.506.004.923.075.219.096
Threshold ≥25 dB
 χ20.130.0040.0926.2820.0463.3470.285.38402.761.3572.2840.0240.0190.0114.7150.0572.892
 P.719.947.762.012.83.067.597.02.986.097.244.131.877.889.915.03.811.089
  • Model = 1 is comparing 2006 with 2008 values; Model = 2 is comparing 2008 with 2010. The χ2 tests have 1 degree of freedom.