Table 1. Correlation between speech outcomes and clinical scores in PSP.

Speech outcomes were computed from Rainbow Passage reading, 3-n back counting and sustained ‘a’ vowel phonation.

	PSPRS Dysarthria			PSPRS Dysphagia			Bulbar Subscale Score			MoCA Total Score
Rainbow passage	r	p-value		r	p-value		r	p-value		r	p-value
loudness	−0.333	0.347		0.091	0.803		−0.051	0.896		0.025	0.946
similarity DTW	−0.539	0.108		−0.742	0.014		−0.799	0.01	*	0.006	0.986
intelligibility DTW	−0.624	0.054		−0.363	0.302		−0.46	0.213		−0.02	0.959
articulatory rate	−0.354	0.316		0.467	0.173		0.247	0.522		−0.17	0.633
total voiced time	−0.132	0.717		−0.688	0.028		−0.672	0.047		−0.05	0.892
total pause time	0.132	0.717		−0.065	0.859		0.085	0.828		0.056	0.879
total signal time	0.305	0.391		−0.519	0.124		−0.306	0.423		0.222	0.537
speech to pause ratio	0.104	0.775		−0.195	0.59		−0.213	0.582		−0.09	0.799
number of pauses	0.083	0.819		−0.599	0.067		−0.363	0.337		0.167	0.644
mean pause length	−0.118	0.746		0.532	0.113		0.341	0.37		0.123	0.734
pitch	−0.097	0.79		0.078	0.831		−0.094	0.811		0.161	0.658
pitch SD	−0.368	0.296		−0.013	0.972		−0.332	0.383		0.253	0.48
ratio extra words	0.437	0.207		0.817	0.004	*	0.8	0.01	*	−0.04	0.919
ratio missing words	0.597	0.069		0.783	0.007	*	0.906	<0.001	*	0.009	0.98
3-n back counting	r	pval		r	pval		r	pval		r	pval
loudness	−0.163	0.632		−0.072	0.834		−0.148	0.683		0.221	0.513
correct counts	0.046	0.893		0.014	0.966		−0.009	0.98		0.703	0.016
incorrect counts	0.256	0.447		0.163	0.632		0.282	0.43		0.016	0.962
ratio correct counts	−0.46	0.155		−0.35	0.292		−0.517	0.126		0.46	0.155
articulatory rate	0.79	0.004	*	0.617	0.043		0.803	0.005		−0.08	0.819
total voiced time	−0.336	0.312		−0.158	0.643		−0.247	0.492		0.341	0.305
total pause time	0.082	0.812		0.234	0.488		0.167	0.645		−0.34	0.312
total signal time	−0.392	0.233		0.072	0.834		−0.123	0.734		−0.32	0.341
pause to speech ratio	0.133	0.698		0.311	0.352		0.259	0.469		−0.26	0.444
mean pause length	0.066	0.847		0.081	0.812		0.019	0.959		−0.3	0.379
pitch	−0.515	0.105		−0.33	0.322		−0.537	0.109		0.258	0.444
pitch SD	0.025	0.941		−0.387	0.24		−0.34	0.337		0.088	0.798

In bold, correlations with a p-value <.05, * = significant after FDR correction.