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Table 1 Bivariate analysis—prevalence of reduced WAI and prevalence ratio according to sociodemographic characteristics of technical-administrative workers in education at the Federal University of Juiz de Fora, Juiz de Fora, 2013 (N = 600)

From: Work ability and associated factors of Brazilian technical-administrative workers in education

Variables Total Reduced WAI PR 95 % CI p value
N (%) N (p/ %)
Age
 Up to 34 years old 142 (24.7) 12 (8.5) 1   
 35–49 years old 174 (30.3) 20 (11.5) 1.36 0.66–2.78 0.400
 50 or older 258 (45.0) 44 (17.1) 2.02 1.07–3.82 0.031
Color or race (according to IBGE)
 White 399 (68.2) 46 (11.5) 1   
 Non-white 186 (31.8) 35 (18.8) 1.63 1.05–2.53 0.029
Marital status
 Married 365 (62.2) 55 (15.1) 1   
 Not married 222 (37.8) 27 (12.2) 0.81 0.51–1.28 0.362
Sex
 Male 305 (51.8) 27 (8.9) 1   
 Female 284 (48.2) 55 (19.4) 2.19 1.38–3.47 0.001
Level of education
 University degree or higher 466 (79.5) 52 (11.2) 1   
 Up to secondary school 120 (20.5) 30 (25.0) 2.24 1.43–3.51 0.000
Monthly family income
 Over 10 minimum wages 123 (21.4) 15 (12.2) 1   
 5 to ≤ 10 minimum wages 280 (48.9) 45 (16.1) 1.32 0.73–2.36 0.355
 ≤5 minimum wages 170 (29.7) 20 (11.8) 0.96 0.49–1.88 0.916
  1. Differences in totals are explained by the fact that some information regarding a few variables was lost. Data below 6 % not informed
  2. WAI work ability index, PR prevalence ratio
  3. 95 % CI: 95 % confidence interval
  4. Source: The author, 2013