Table 3.

Linguistic properties: Mean measures

Measure	Document type		p-value
	Voice-dictated	Typed-in
Term frequency (TF)	138.04	90.19	< 0.001
Inverse document frequency (IDF)	2.39	2.66	< 0.001
Burstiness	1.86	1.59	< 0.001
Power-law exponent	1.57	1.59	Does not apply
Residual of document entropy	0.56	0.35	< 0.001