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Table 1 Distribution of individual and professional variables in the sample (n= 12,839) (Figures rounded to one decimal)

From: Work ability assessment in a worker population: comparison and determinants of Work Ability Index and Work Ability score

Variable Categories N %
WAI score Excellent 5365 41.8
Good 5027 39.2
Moderate 1897 14.8
Poor 550 4.3
Gender Male 9412 73.3
Age [40–45] 5471 42.6
[45–50] 3856 30.0
[50–55] 2308 18.0
[55–60] 1008 7.9
[60–65] 196 1.5
BMI Underweight (< 18.5) 119 0.9
Normal [18.5-25] 4425 34.5
Overweight [25-30] 5214 40.6
Obesity (≥ 30) 3076 24.0
Missing values 5  
Smoking habits Non-smoker 9222 71.8
Former smoker 538 4.2
from 1 to 10 cigarettes 753 5.9
from 11 to 20 cigarettes 1053 8.2
from 21 to 30 cigarettes 836 6.5
Over 30 cigarettes 437 3.4
Type of position Physical 4208 32.8
Mental 2809 21.9
Mixed 5822 45.3
FICD Presence 445 3.5
MSD Presence 4915 38.3
Mental diseases Presence 1317 10.3
Size of firm staff 1-9 1972 17.1
10-49 3871 33.6
50-249 3887 33.7
Over 250 1798 15.6
Missing values 1311  
  1. BMI in kg/m2, FICD: Functional and ischemic cardiac diseases, MSD: Musculoskeletal disorders.