BACKGROUND: Shift work, noise, and physical workload are very common occupational exposures and they tend to cluster in the same groups of workers. OBJECTIVES: To study the short and long term effects of these exposures on risk of coronary heart disease (CHD) and to estimate the joint effects of these factors. METHODS: The study population in this prospective 13 year follow up study of 1804 middle aged industrially employed men was collected at the first screening for the Helsinki Heart Study. The CHD end points (ICD-9 codes 410-414 and ICD-10 codes I20-I25) were obtained from official Finnish registers. The Finnish job-exposure matrix FINJEM provided information on occupational exposures. Relative risks (RR) of CHD for the exposures were estimated using Cox's proportional hazard models adjusting for classical risk factors of CHD. RESULTS: The RR in the five year follow up for continuous noise combined with impulse noise was 1.28; for shift work it was 1.59, and for physical workload 1.18, while in the 13 year follow up the RRs were 1.58, 1.34, and 1.31, respectively. When adjusted for white-collar/blue-collar status the RRs decreased markedly. The RR in the 13 year follow up for those exposed to two risk factors was close to 1.7 and for those exposed to all three, 1.87. CONCLUSION: Shift work and continuous noise entailed an excess risk for CHD in the shortest follow up with only a few retired workers but a decreasing risk during the longer follow up. For physical workload and impulse noise the trend was opposite: the CHD risk was increasing with increasing follow up time despite increasing numbers of retired workers.
BACKGROUND: Shift work, noise, and physical workload are very common occupational exposures and they tend to cluster in the same groups of workers. OBJECTIVES: To study the short and long term effects of these exposures on risk of coronary heart disease (CHD) and to estimate the joint effects of these factors. METHODS: The study population in this prospective 13 year follow up study of 1804 middle aged industrially employed men was collected at the first screening for the Helsinki Heart Study. The CHD end points (ICD-9 codes 410-414 and ICD-10 codes I20-I25) were obtained from official Finnish registers. The Finnish job-exposure matrix FINJEM provided information on occupational exposures. Relative risks (RR) of CHD for the exposures were estimated using Cox's proportional hazard models adjusting for classical risk factors of CHD. RESULTS: The RR in the five year follow up for continuous noise combined with impulse noise was 1.28; for shift work it was 1.59, and for physical workload 1.18, while in the 13 year follow up the RRs were 1.58, 1.34, and 1.31, respectively. When adjusted for white-collar/blue-collar status the RRs decreased markedly. The RR in the 13 year follow up for those exposed to two risk factors was close to 1.7 and for those exposed to all three, 1.87. CONCLUSION: Shift work and continuous noise entailed an excess risk for CHD in the shortest follow up with only a few retired workers but a decreasing risk during the longer follow up. For physical workload and impulse noise the trend was opposite: the CHD risk was increasing with increasing follow up time despite increasing numbers of retired workers.
Authors: K Steenland; L Fine; K Belkić; P Landsbergis; P Schnall; D Baker; T Theorell; J Siegrist; R Peter; R Karasek; M Marmot; C Brisson; F Tüchsen Journal: Occup Med Date: 2000 Jan-Mar
Authors: Elise E M M van Kempen; Hanneke Kruize; Hendriek C Boshuizen; Caroline B Ameling; Brigit A M Staatsen; Augustinus E M de Hollander Journal: Environ Health Perspect Date: 2002-03 Impact factor: 9.031
Authors: Mai C Arlien-Søborg; Astrid S Schmedes; Z A Stokholm; M B Grynderup; J P Bonde; C S Jensen; Å M Hansen; T W Frederiksen; J Kristiansen; K L Christensen; J M Vestergaard; S P Lund; H A Kolstad Journal: Int Arch Occup Environ Health Date: 2016-06-18 Impact factor: 3.015
Authors: Serge Andre Girard; Tony Leroux; René Verreault; Marilène Courteau; Michel Picard; Fernand Turcotte; Julie Baril; Olivier Richer Journal: Int Arch Occup Environ Health Date: 2014-05-03 Impact factor: 3.015
Authors: T Yates; K Khunti; A V Rowlands; C Gillies; Y Chudasama; M J Davies; N Islam; D E Kloecker; C Lawson; M Pareek; C Razieh; F Zaccardi Journal: BMC Public Health Date: 2021-04-22 Impact factor: 3.295
Authors: Christian Moretti Anfossi; Magdalena Ahumada Muñoz; Christian Tobar Fredes; Felipe Pérez Rojas; Jamie Ross; Jenny Head; Annie Britton Journal: Ann Work Expo Health Date: 2022-07-02 Impact factor: 2.779
Authors: Manav V Vyas; Amit X Garg; Arthur V Iansavichus; John Costella; Allan Donner; Lars E Laugsand; Imre Janszky; Marko Mrkobrada; Grace Parraga; Daniel G Hackam Journal: BMJ Date: 2012-07-26