Table 6.

Significant logistic regression outcomes of airway protection score versus lesion status and oral kinematics, timing of muscle activation, and duration of muscle activation

Kinematic Variable	Factor Significance	Odds Ratio	ROC
PT ratio	PT ratio NS		0.7076
	Treatment SIG	<0.1
	PT ratio × treatment SIG	>200
MT ratio	MT ratio NS		0.6395
	Treatment SIG	<0.2
	MT ratio × treatment SIG	>4
Time of maximum hyoid elevation	Hyoid elevation SIG	>50	0.7887
	Treatment SIG	<.1
	Hyoid elevation × treatment SIG	>30

Muscle (Timing)	Factor Significance	Odds Ratio	ROC
Right genioglossus	Timing NS		0.7681
	Treatment SIG	>2
	Timing × treatment NS
Right cricothyroid	Timing NS		0.6825
	Treatment SIG	>2
	Timing × treatment NS
Right thyrohyoid	Timing NS		0.5656
	Treatment SIG	>12
	Timing × treatment SIG	<0.1
Left thyrohyoid	Timing NS		0.6218
	Treatment NS
	Timing × treatment SIG	>1
Right stylohyoid	Timing SIG	<1	0.7303
	Treatment SIG	>1
	Timing × treatment SIG	>1

Muscle (Duration)	Factor Significance	Odds Ratio	ROC
Right genioglossus	Duration SIG	>1	0.7681
	Treatment SIG	>2
	Duration × treatment NS
Left cricothyroid	Duration SIG	>1	0.821
	Treatment NS
	Duration × treatment NS
Right thyrohyoid	Duration SIG	>1	0.6802
	Treatment SIG	>6
	Duration × treatment SIG	<1
Left thyrohyoid	Duration SIG	>1	0.6205
	Treatment SIG	>2
	Duration × treatment SIG	<1
Right stylohyoid	Duration SIG	>1	0.6078
	Treatment SIG	>2
	Duration × treatment SIG	<1

Bold factor names indicate the coefficient for that factor in the logistic regression was significant at P < 0.05 (SIG, significant; NS, not significant). Odds ratios indicate magnitude and polarity of change in the odds of the outcome. An odds ratio greater than 1 indicates that the greater the value of the predictive factor, the greater the odds of an unsafe swallow. ROC, receiver operating characteristics; ROC area, measure of regression goodness of fit.