Skip to main content

Table 2 Characteristics of KNR epidemiological studies by treatment of worker exposure

From: New views on the hypothesis of respiratory cancer risk from soluble nickel exposure; and reconsideration of this risk's historical sources in nickel refineries

First Author (Year)

Follow up period

Year first employed

Number of workers

Cases of lung cancer

Qualifications for study entrya

I. Studies using rule based allocation of workers to process department

Pedersen (1973) [1]b

1953–71

1910–60

1,916

48

≥ 3 years employment; alive on Jan. 1, 1953

Magnus (1982) [2]b

1953–79

1916–65

2,247

82

≥ 3 years employment; alive on Jan. 1, 1953

II. Studies using ICNCM Job Exposure Matrix developed by protocol

ICNCM (1990)[3]b

1953–84

1946–69

3,250

77

≥ 1 year employment; alive on Jan. 1, 1953

Andersen (1996) [4]b

1953–93

1916–40

379

203

≥ 3 years employment; alive on Jan. 1, 1953

  

1946–83

4,385

 

≥ 1 year employment; alive on Jan. 1, 1953

III. Studies using revised Job Exposure Matrix

Grimsrud (2002)[6]c

Dec '52-Aug '95

1910–94

5,389

227

≥ 1 year employment; alive on Jan. 1, 1953

Grimsrud (2003)[7]b

1953–2000

1910–89

5,297

267

≥ 1 year employment; alive on Jan. 1, 1953

Grimsrud (2005)[8]c

Dec '52-Aug '95

1910–94

5,389

227

≥ 1 year employment; alive on Jan. 1, 1953

  1. a A worker qualified on Jan. 1, 1953, or on the first succeeding date when he had the minimum qualifying employment. b Cohort study
  2. c Case control study