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Table 5 Breast cancer odds ratios (matched analysis) for duration (lagged) in minor sectors excluding terms for sectors likely to have low work-related risk (mass media, education, healthcare, entertainment)

From: Breast cancer risk in relation to occupations with exposure to carcinogens and endocrine disruptors: a Canadian case–control study

Parameter

OR (95% CI)

Wald P

Duration in minor sectors, year (lagged 5 year)

Agriculture/plants

1.02 (0.99-1.05)

0.14

Agriculture/animals

1.02 (0.96-1.08)

0.54

Mining

0.82 (0.53-1.29)

0.39

Power Generation/distribution

1.02 (0.96-1.08)

0.59

Construction

1.01 (0.94-1.08)

0.84

Food manufacturing

1.02 (0.99-1.06)

0.24

Liquor/beer/wine

0.99 (0.95-1.03)

0.50

Tobacco manufacturing

0.91 (0.77-1.09)

0.30

Textile manufacturing

1.06 (0.97-1.16)

0.21

Wood manufacturing

0.77 (0.58-1.03)

0.075

Printing

1.05 (0.96-1.15)

0.27

Petroleum, petrochemical, chemical mfr

0.98 (0.93-1.03)

0.42

Plastics manufacturing (non auto)

0.86 (0.69-1.06)

0.16

Plastics manufacturing (auto)

1.09 (1.03-1.15)

0.0023

Glass, ceramic manufacturing

1.01 (0.91-1.12)

0.89

Metallurgical, metalworking and fabrication

1.01 (0.99-1.03)

0.25

Electrical and electronics manufacturing

1.03 (0.93-1.13)

0.61

Light manufacturing (jewelry, furniture

0.96 (0.84-1.09)

0.52

Retail

0.98 (0.97-1.00)

0.012

Transportation

0.98 (0.96-1.01)

0.29

Hotels and motels

0.96 (0.89-1.03)

0.23

Beauty salon/hair care

0.99 (0.95-1.02)

0.50

Drycleaning, laundry

1.02 (0.95-1.09)

0.64

Bars, gaming/gambling

1.00 (0.96-1.05)

0.91

Restaurants, food services

1.01 (0.98-1.03)

0.68

Total employment duration, year (lagged 5 year) 1

Duration

0.97 (0.93-1.00)

0.063

Duration, squared

1.00 (1.00-1.00)

0.18

  1. Excluded minor sectors: Media, culture; Administration: non educ.,non healthcare; Education; Healthcare; Entertainment.
  2. Odds ratios (OR) from single model by conditional logistic regression with terms for demographic, reproductive risk factors as in Table 4 and terms for employment duration; matching on age in 3-year intervals.
  3. OR evaluated at duration = 1year (lagged 5 year).
  4. 1. for including employment duration terms: χ2 (2df) =5.84, p=0.05.