1. NOISESCAN- AN EXPERT SYSTEM FOR INDIVIDUAL HEARING PRESERVATION ©Jukka Starck, Esko Toppila Finnish Institute of Occupational Health, Helsinki, Finland Ilmari Pyykkö Karolinska Hospital, Stockholm, Sweden

2. LARGE VARIATION IN NIHL PRESENT MODELS? ISO 1999-1990 AGE A-WEIGHTED EQUIVALENT LEVEL GENDER

3. The variation in NIHL according to ISO1999

4. RISK FACTORS CAUSING EFFECTS TO HEARING

5. PURPOSE OF THE STUDY TO EVALUATE THE ROLE OF VARIOUS RISK FACTORS IN THE DEVELOPMENT OF NIHL TO UTILIZE THE RESULTS IN ESTABLISHING THE HEARING CONSERVATION PROGRAM, NOISESCAN

6. STUDY POPULATION N=552 PAPER MILL WORKERSN=285 SHIPYARD WORKERSN=168 FOREST WORKERSN=99 MEANSTD SYSTOLIC BP (mmHg)13617 DIASTOLIC BP(mmHg)8612 CHOLESTEROL6.01.3 LANIIN(dB)999 LANIOUT (dB)1076 SMOKINGY/N PAIN KILLERSY/N VWFY/N

7. 1 risk factor =Significant difference at 95 % level

8. At least 3 risk factors No significant changes

18. RESULTS NOISESCAN USED AT SELECTED WORKPLACES IN THE MINE INDUSTRY, CAR MANUFACTURING, THE PAPER AND PULP INDUSTRIES, AND MILITARY OCCUPATIONS PRELIMINARY RESULTS SHOW THAT THE SYSTEM IS VERY APPLICABLE AND HELPS OHC IN ESTABLISHING HCP

19. NOISESCAN HELPS IT PREDICTS INDIVIDUAL NIHL IT INCREASES ACCURACY OF EXPOSURE ESTIMATIONS IT SHOWS THE PROTECTION EFFICIENCY OF HPD’s IT CAN BE USED TO COMPARE THE EFFICIENCY OF HCP ACTIONS IT CAN BE USED TO DEVELOP INDIVIDUAL HCP IT UNIFORMS CLINICAL PRACTICES IT SHOWS THE ROLE OF CONFOUNDING FACTORS IN NIHL

20. HOW TO GET IT? DEMO VERSION IN WWW.EISOSH.ORG VERSION 2 IN EXPERIMENTAL USE, AVAILABLE ON CD NEW VERSION AVAILABLE AUTUMN 2000 APPLICABLE BOTH FOR CLINICAL WORK AND RESEARCH PURPOSES

21. PUBLICATIONS Starck, Toppila, Pyykkö. Management of Sophisticated Hearing Conservation Program. AJIM suppl 00:1-4(1999) Starck, Toppila, Pyykkö. Smoking as a Risk Factor in Sensory Neural Hearing Loss among Workers Exposed to Occupational Noise. Acta Otolarlyngol 119:302-305 (1999) Pyykkö, Toppila, Starck, Juhola, Auramo. Database for a Hearing Conservation Program. Scand Audiol 29:52-58 (2000) Toppila, Pyykkö, Starck. Individual Risk Factors in the development of Noise- Induced hearing Loss. Noise and Health. Accepted for publication 2000. Toppila, Pyykkö, Starck. Age and Noise- induced Hearing Loss. Occ Env Health. Accepted for publication 2000.