Table 1.

Regression slopes and correlation coefficients (in parentheses) of the four American English and four Canadian French speakers for upper-lip protrusion and constriction in BB and NBB conditions.

		Upper-lip protrusion		Constriction (lip area)
		NBB condition	BB condition	NBB condition	BB condition
American English speakers	MA001	0.51 (0.67*)	0.40 (0.57*)	0.87 (0.88*)	0.75 (0.84*)
	MA002	Insufficient protrusion (<2 mm)		0.99 (0.94*)	0.90 (0.82*)
	FA001			1.12 (0.72*)	1.08 (0.78*)
	FA002			0.84 (0.93*)	0.95 (0.97*)
Canadian French speakers	MF001	0.65 (0.92**)	0.63 (0.93**)	0.86 (0.94**)	0.85 (0.93**)
	MF002	0.45 (0.65**)	0.78 (0.88**)	0.92 (0.95**)	0.94 (0.96**)
	FF001	0.60 (0.92**)	0.68 (0.85**)	0.98 (0.99**)	1.05(0.95**)
	FF002	0.24 (0.75**)	0.18 (0.69**)	0.88 (0.98**)	0.86 (0.95**)

^*= p < 0.0001.

^**= p < 0.00001.