Table 2.

Multiple myeloma risk among women workers by sector and occupation adjusted for age, period, and geographic area

Occupation*Whole cohort
Subcohort 1960-1970
CasesSIRRR (95% CI)§CasesSIRRR (95% CI)§
Sector 0: Professional and technical work2161000.99 (0.86-1.15)921061.06 (0.86-1.31)
    042 Attendants in psychiatric care121851.86 (1.06-3.29)31011.01 (0.33-3.15)
    053 Class teachers201001,00 (0.64-1.55)201291.29 (0.83-2.00)
Sector 1: Administrative and managerial161141.14 (0.70-1.87)31401.39 (0.45-4.31)
Sector 2: Bookkeeping and clerical work188970.96 (0.82-1.12)481111.09 (0.82-1.46)
    201 Bookkeepers and office cashiers351011.01 (0.72-1.41)181531.51 (0.95-2.41)
Sector 3: Sales work167960.94 (0.80-1.11)62990.97 (0.75-1.26)
Sector 4: Agriculture, forestry, and fishing851011.01 (0.81-1.26)10990.98 (0.53-1.83)
    401 Working proprietors, agricultural, horticultural, and forestry enterprisers131661.70 (0.98-2.93)41751.78 (0.67-4.75)
Sector 5: Mining and quarrying000.00 (0.00-.)000.00 (0.00-.)
Sector 6: Transport and communications38970.96 (0.69-1.32)11770.76 (0.42-1.38)
Sector 7: Production I1001041.08 (0.88-1.33)30850.89 (0.62-1.28)
    750 Toolmakers, machine-tool setters and operators121761.79 (1.01-3.15)11851.85 (0.26-13.16)
    758 Other engineering and building metal work141741.73 (1.02-2.93)21161.13 (0.28-4.52)
Sector 8: Production II961331.35 (1.10-1.66)261521.53 (1.04-2.26)
    822 Baker and pastry cooks132092.06 (1.20-3.57)52072.06 (0.86-4.96)
    857 Paper and paperboard product worker62542.58 (1.16-5.76)22562.54 (0.63-10.16)
    881 Packers171251.27 (0.78-2.04)31231.26 (0.40-3.90)
    883 Store and warehouse workers141291.29 (0.76-2.18)31681.68 (0.54-5.22)
Sector 9: Services and military work376960.94 (0.84-1.06)86950.93 (0.75-1.16)
    911 Catering supervisors221311.31 (0.86-1.99)91491.48 (0.77-2.85)
  • * Occupations with at least 5 observed cases and RR ≥ 2.00 or at least 10 observed cases and RR ≥ 1.20 in whole cohort or in subcohort.

  • SIR: age and period SIR using the whole cohort as reference.

  • RR: Age, period, and geographic area RR for each occupation in comparison with all others.

  • § 95% confidence intervals for the RR.