Table 1 Cohort characteristics and frequency of deaths among 20,141 Swiss railway workers, by cause and occupational group.
ICD-8 | ICD-10 | Station master | Train attendant | Shunting yard engineer | Train driver | Total | |
|---|---|---|---|---|---|---|---|
N (%) | N (%) | N (%) | N (%) | N (%) | |||
Number of exposed individuals | 4,757 | 6,909 | 1,378 | 7,097 | 20,141 | ||
Person years of observation | 118,418 | 160,819 | 33,752 | 151,139 | 464,129 | ||
Number of deaths (all causes) | 1278 (100%) | 2089 (100%) | 394 (100%) | 1652 (100%) | 5413 (100%) | ||
Heart and circulation diseases (all) | 390–458 | I00-I99 | 862 (67%) | 1368 (65%) | 260 (66%) | 1104 (67%) | 3594 (66%) |
Arrhythmia related diseases | 427.2, 427.9 | I44, I45, I47-49, R00 | 37 (3%) | 76 (4%) | 6 (2%) | 51 (3%) | 170 (3%) |
Acute myocardial infarction | 410 | I21, I22 | 73 (6%) | 125 (6%) | 37 (9%) | 93 (6%) | 328 (6%) |
Atherosclerosis related mortality | 440 | I70 | 32 (3%) | 56 (3%) | 9 (2%) | 43 (3%) | 140 (3%) |
Sub-acute and chronic coronary heart disease | 411–414 | I20, I24 , I25 | 265 (21%) | 444 (21%) | 108 (27%) | 365 (22%) | 1182 (22%) |