Table II. Pure tone audiometry: analysis of audiogram disorders (N = 41) observed at beginning and end of spa inhalatory therapy (inhalation of humid-hot vapour jet + Politzer) with sulphur mineral water.

Mean (Hz) frequency	Mean (dB) basal ± SEM	Mean (dB) final ± SEM	Difference	Improvement %	“t” test
500-1000-2000	31.1 ± 1.7	26.8 ± 1.5*	4.3	14	< 0.05
4000	45.0 ± 3.0	40.0 ± 3	5.0	11	> 0.05