Table 1

Characteristics of the cohort for specific sectors and age

Cotton SWKSilk SWKOther sectorsTotal
No.Percent (%)No.PercentNo.PercentNo.Percent
Total number8626511121170014267400
 All COPD and allied conditions771592184
 Bronchitis, NOS00.016.700.010.5
 Chronic bronchitis2532.5426.72729.35630.4
 Emphysema2633.8533.32729.35831.5
 Asthma2329.9533.33740.26535.3
 Bronchiectasis33.900.011.142.2
 Extrinsic allergic alveolitis00.000.000.000.0
 Chronic airway obstruction NOS00.000.000.000.0
Age at baseline (years)
 30–341705119.8233321.03276919.35215319.5
 35–391561318.1238621.53670321.65470220.5
 40–441080512.5167515.12491714.73739714.0
 45–4940844.74383.996085.7141305.3
 50–5457356.67056.3141368.3205767.7
 55–591609018.7158714.32713216.04480916.8
 60–641557418.1169415.22205513.03932314.7
 65+13131.53032.726941.643101.6
Age at death or end of follow-up
 30–3415301.82202.021311.338811.5
 35–3936554.25725.166513.9108784.1
 40–441374715.9215219.43127318.44717217.6
 45–491403116.3206918.63237019.04847018.1
 50–541064512.3151313.62302013.53517813.2
 55–5942885.04033.699775.9146685.5
 60–6465927.68587.7158729.3233228.7
 65–691650919.1166214.92760116.24577217.1
 70–741427916.6159714.41993211.73580813.4
 75+9891.1750.711870.722510.8
Retired3665642.5395735.65962235.110023537.5
Ever smokers30863.63002.744822.678682.9
  • COPD, chronic obstructive pulmonary disease; NOS, not otherwise specified; SWK, spinning, weaving and knitting.