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Table 1 Distribution of study population characteristics

From: Risk assessment of manual handling operations at work with the key indicator method (KIM-MHO) — determination of criterion validity regarding the prevalence of musculoskeletal symptoms and clinical conditions within a cross-sectional study

Parameter*

Risk category 1 (Reference)

Employees in jobs with low MHO, < 10 points KIM-MHO

Risk category 2

Employees in jobs with MHO, 10 – 24 points KIM-MHO

Risk category 3

Employees in jobs with MHO, 25 – 49 points KIM-MHO

Risk category 4

Employees in jobs with MHO, ≥ 50 points KIM-MHO

All employees

Women

N = 306

N = 75

N = 59

N = 73

N = 513

 age [years]

38.7 (10.1)

37.7 (8.9)

42.2 (9.1)

44.8 (9.9)

39.9 (10.0)

 body height [cm]

167.6 (6.3)

169.2 (6.8)

164.7 (6.0)

164.7 (5.5)

167.1 (6.4)

 body mass index

23.7 (3.6)

23.9 (4.3)

25.6 (4.7)

26.2 (4.9)

24.3 (4.2)

 working hours per week [hours]

38.7 (6.6)

36.7 (5.6)

34.9 (3.1)

36.7 (3.1)

37.7 (5.9)

Men

N = 498

N = 173

N = 23

N = 239

N = 933

 age [years]

41.5 (9.0)

38.5 (9.4)

39.7 (11.2)

36.6 (8.5)

39.7 (9.2)

 body height [cm]

181.1 (6.8)

181.0 (6.9)

178.6 (6.3)

178.4 (6.8)

180.3 (6.9)

 body mass index

26.1 (3.2)

26.2 (3.6)

25.5 (2.9)

26.8 (4.1)

26.3 (3.6)

 working hours per week [hours]

43.3 (6.3)

40.0 (5.2)

38.5 (2.4)

37.7 (2.3)

41.1 (5.8)

  1. *Distribution of different study characteristics by exposure to manual handling operations (MHO) according to KIM-MHO risk categories. Mean and standard deviation