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. 2007 Sep 18;8:93. doi: 10.1186/1471-2474-8-93

Table 1.

Demographic and anthropometric characteristics of questionnaire respondents in 2005

Floor layers (N = 109) Graphic designers (N = 241)
1995 2005 1995 2005

Mean Range Mean Range Mean Range Mean Range
Age (years) 43.5 26–60 53.5 36–70 48.6 30–60 58.6 40–70
Seniority * (years) 22.0 2–40 29.4 3–49 27.6 1–45 34.9 2–54
BMI(kg/m2) 25.5 19.6–40.1 26.7 20.0–51.1 25.0 16.8–37.3 26.1 16.6–42.0

Employment in the trade n (%) n (%) n (%) n (%)

Presently at work 81 (74.3%) 56 (51.4%) 173 (71.8%) 75 (31.1%)
Presently off work 28 (25.7%) 53 (48.6%) 68 (28.2%) 166 (68.9%)
- Change of occupation 18 (16.5%) 27 (24.8%) 37 (15.3%) 69 (28.7%)
- Early retirement 2 (1.9%) 9 (8.3%) 27 (11.2%) 68 (28.2%)
- Old-age pension - 5 (4.6%) - 19 (7.9%)
- Disability pension 7 (6.4%) 8 (7.3%) 4 (1.7%) 8 (3.3%)
- Rehabilitated - 1 (0.9%) - -
- Long illness 1 (0.9%) 3 (2.7%) - 2 (0.8%)

*Duration of employment in the trade

BMI, body mass index