Table 2. Summary of the generalized linear model predicting the classification of phoneme /o/ and /u/ for female

	Estimate	SE	z-value	p-value
(Intercept)	0.002	0.193	0.008	0.9936
F1	–0.495	0.209	–2.375	0.0176*
F2	1.198	0.28	4.281	1.86e-05***
H1-H2	–0.061	0.277	–0.219	0.8266
H1-A1	0.299	0.292	1.023	0.3061

Formula: phoneme~F1+F2+H1-H2+H1-A1, family=binomial (link= “logit”).
Significant results are presented in bold.
p<.05,
p<.001.