Skip to main content

Table 1 Prevalence of S. aureus and MRSA carriage by population group and factors associated with nasal carriage

From: Molecular epidemiology and virulence characteristics of Staphylococcus aureus nasal colonization in medical laboratory staff: comparison between microbiological and non-microbiological laboratories

Characteristic (n) S. aureus Univariate logistic Multivariate logistic MRSA Univariate logistic
n (%) P value OR(95% CI) P value OR (95% CI) n (%) P value OR(95% CI)
Sex
 Male (187) 42(22.5) 0.155 1.414(0.877–2.279)    4(2.1) 0.842 0.878(0.244–3.157)
 Female (247) 42(17.0)      6(2.4)   
Duration of employment
  < 1 year (49) 9(18.4) 0.149 1.790(0.813–3.941)    3(6.1) 0.075 3.522(0.880–14.093)
 1–5 years (150) 35(23.3) 0.215 1.358(0.837–2.202)    2(1.3) 0.338 0.466(0.098–2.224)
 6–10 years (93) 17(18.2) 0.631 0.866(0.481–1.559)    2(2.2) 0.911 0.915(0.191–4.383)
 11–20 years (85) 18(21.2) 0.772 1.090(0.608–1.953)    3(3.5) 0.407 1.787(0.452–7.061)
  > 20 years (57) 8(14.3) 0.228 0.616(0.280–1.354)    0(0)
Department
 Microbiological laboratory (130) 34(26.2) 0.039 1.677(1.027–2.740) 0.04 1.630(1.024–2.597) 2(1.5) 0.492 0.578(0.121–2.760)
 Other laboratory (304) 53(17.4)    8(2.6)  
Work protection
 Standard (354) 74(20.9) 0.155 1.620(0.833–3.151)    8(2..3) 0.951 0.951(0.197–4.597)
 Non-standard (80) 13(16.2)     2(2.5)  
Nasal cleaning habit
 Daily or weekly (106) 29(27.4) 0.032 1.753(1.050–2.927) 0.101 1.511(0.923–2.471) 3(2.8) 0.679 1.336(0.339–5.259)
 Rarely or never (328) 58(17.7)    7(2.1)  
Living with hospital staff
 Yes (147) 40(27.2) 0.008 1.909(1.182–3.083) 0.008 1.848(1.174–2.901) 3(2.0) 0.794 0.833(0.212–3.271)
 No (287) 47(16.4)    7(2.4)  
Underlying disease
 Yes (65) 17(26.2) 0.239 1.873(0.982–3.573)    2(3.3) 0.65 1.884(0.386–9.195)
 No (369) 70(18.9)     8(2.2)  
Hospitalization in past one years
 Yes (32) 9(28.1) 0.157 1.085(0.450–2.617)    0(0)  
 No (402) 78(19.4)     10(2.5)  
Current smoking statue
 Yes (23) 5(21.7) 0.837 1.114(0.402–3.090)    1(4.3) 0.511 2.030(0.246–16.748)
 No (411) 82(20.0)     9(2.2)  
  1. MRSA, methicillin resistant S. aureus
  2. Underlying disease: hypertension, diabetes, chronic rhinitis, urticaria, hyperthyroidism; OR odds ratio, CI confidence interval