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Figure 4. Null hypothesis probabilities for Chi squared association analyses. PET = post exposure tinnitus lasting for longer than 5mins. ST = spontaneous tinnitus lasting for longer than 5mins. NC = night-club

Figure 4. Null hypothesis probabilities for Chi squared association analyses. PET = post exposure tinnitus
lasting for longer than 5mins. ST = spontaneous tinnitus lasting for longer than 5mins. NC =
night-club