Table 4

PRs and 95% CIs of COPD risk spirometry defined as FEV1/FVC<LLN for exposure to current job codified as seven-digit SOC code 2000 within each of the four-digit SOC codes for 14 occupations associated with a significant increased COPD risk, in the UK Biobank study (n=228 614)

SOC code four-digit, seven-digitOccupations and job titlesHealthy exposedCases exposedPR95% CI
8217Seafarers; barge, lighter and boat operatives
8122Coal mine operatives1352.301.005.31
9132Industrial cleaning process occupations34101.961.163.31
5313Roofers, roof tilers and slaters
5313004 Contractor, roofing2362.701.415.13
5313018 Roofer3391.951.053.60
9134Packers, bottlers, canners, fillers
9134127 Packer50101.841.053.22
9134174 Packer factory2351.730.803.74
5112 Horticultural trades84141.550.972.50
8111Food, drink and tobacco process operatives
8111002 Bakery, assistant35102.611.464.68
9233Cleaners, domestics
9233037 Cleaner, canteen1053.721.937.18
9233120 Supervisor, cleaning39102.101.183.58
9233072 Domestic, hospital48101.610.962.70
9233073 Domestic100201.601.082.38
9233020 Cleaner7901471.521.301.78
5322Floorers and wall tilers
5322008 Fitter, carpet33102.041.193.50
5322068 Tiler, ceramic2751.660.733.75
8114Chemical and related process operatives218291.390.981.97
9211Postal workers, mail sorters, messengers, couriers
9211056 Postman408611.511.181.93
9121Labourers in building and woodworking trades
9121024 Handyman, not elsewhere classified2473.041.655.62
9121100 Worker, ground (building and contracting)2062.201.214.02
9121029 Labourer (building and contracting)2651.860.854.05
9121061 Man, maintenance1451.660.753.66
9244 School mid-day assistants363521.321.011.74
9223Kitchen and catering assistants
9223123 Porter, kitchen1762.731.315.66
9223001 Assistant, catering58151.941.183.21
9223019 Assistant, kitchen161281.621.172.24
  • PRs and 95% CIs for exposure to each seven-digit SOC code and COPD risk (defined as FEV1/FVC<LLN) were calculated by using a Poisson model with robust variance adjusted for sex, study centre (22 categories), age (5 years categories) and lifetime smoking exposure (ever, pack-years and years since quitting). Reference category: current workers not employed in the specific seven-digit SOC-coded job tested. In bold: occupations including detailed job titles significantly associated with COPD risk. Healthy=non COPD cases.

  • COPPD, chronic obstructive pulmonary disease; FEV1, forced expiratory volume in 1 s; FVC, forced vital capacity; LLN, lower limit of normal; PR, prevalence ratio; SOC, Standard Occupational Classification.