In the control group , there were @ males and @ females , aged from @ to @ years old with an average of ( @ ) years ; course of disease was from @ to @ days with an average of ( @ ) days ; pure-tone audiometry score was from @ to @ dB with the mean of ( @ ) dB ; Northwick Park Neck Pain Questionnaire ( NPQ ) score was from @ to @ scores with an average of ( @ ) scores .