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Table 2 Unadjusted (raw) prevalence of symptoms in the last 7 days

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

Body region by gender* 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
 neck/ cervical spine 90/304 (29.6%) 17/75 (22.7%) 27/59 (45.8%) 40/73 (54.8%) 174/511 (34.1%)
 shoulder/ upper arm 58/304 (19.1%) 14/75 (18.7%) 23/59 (39.0%) 32/73 (43.8%) 127/511 (24.9%)
 elbow/ forearm 13/304 (4.3%) 2/75 (2.7%) 11/59 (18.6%) 22/73 (30.1%) 48/511 (9.4%)
 hand/ wrist 26/304 (8.6%) 4/75 (5.3%) 17/59 (28.8%) 34/73 (46.6%) 81/511 (15.9%)
 lower back/lumbar spine 42/303 (13.9%) 8/75 (10.7%) 22/59 (37.3%) 24/73 (32.9%) 96/510 (18.8%)
Men N = 498 N = 173 N = 23 N = 239 N = 933
 neck/ cervical spine 86/498 (17.3%) 22/173 (12.7%) 4/23 (17.4%) 48/236 (20.3%) 160/930 (17.2%)
 shoulder/ upper arm 70/498 (14.1%) 17/173 (9.8%) 7/23 (30.4%) 52/236 (22.0%) 146/930 (15.7%)
 elbow/ forearm 28/498 (5.6%) 8/173 (4.6%) 3/23 (13.0%) 40/232 (17.2%) 79/926 (8.5%)
 hand/ wrist 28/498 (5.6%) 11/173 (6.4%) 7/23 (30.4%) 72/234 (30.8%) 118/928 (12.7%)
 lower back/lumbar spine 34/498 (6.8%) 19/171 (11.1%) 8/23 (34.8%) 85/238 (35.7%) 146/930 (15.7%)
  1. *Unadjusted (raw) prevalence of symptoms in the last 7 days for different body regions by exposure to manual handling operations (MHO) according to KIM-MHO risk categories. Number of cases with symptoms/number of all available subjects (percentage of cases to all subjects)