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Table 3 Tetrachoric correlation coefficients between the different types of voice disorders

From: Voice disorders and mental health in teachers: a cross-sectional nationwide study

Type of disorder Hoarse voice Frog in the throat Sore throat Loss of voice
Hoarse voice 1 0.65 0.54 0.48
Frog in the throat 0.78 1 0.65 0.70
Sore throat 0.67 0.67 1 0.54
Loss of voice 0.69 0.85 0.72 1
  1. Tetrachoric correlation coefficients computed in males are disposed in italics in the lower left of the table, those computed in females are disposed in the upper right.