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Table 2 Bivariate analysis of demographic information and risk factors for MRSA

From: Prevalence of and risk factors for methicillin-resistant Staphylococcus aureus nasal carriage in the West of Iran: a population-based cross-sectional study

Factor SANC Frequency (% column) MRSA p Crude OR 95% CI
Positive No. (%) Negative No. (%)
Sex
 Male 113 (35.09) 42 (37.17) 71 (62.83) 0.001 6.48 2.13–19.66
 Female 68 (24.46) 13 (19.12) 55 (80.88)    
Agea
 1–10 years 34 (44.74) 10 (29.41) 24 (70.59) 1
 10–20 years 38 (57.58) 16 (42.10) 22 (57.90) 0.002 10.64 2.37–47.79
 20–30 years 20 (26.32) 4 (20.00) 16 (80.00) 0.78 1.33 0.17–10.52
 30–40 years 12 (10.08) 4 (33.33) 8 (66.77) 0.48 2.18 0.25–19.29
 40–50 years 18 (16.07) 8 (44.44) 10 (55.56) 0.05 8.85 1.02–76.89
 50–60 years 32 (40.51) 10 (31.25) 22 (68.75) 0.08 4.62 0.83–25.53
 60–70 years 27 (37.50) 3 (11.11) 24 (88.99) 0.19 0.12 0.004–3.03
Hospital visit in the last 3 months
 Yes 58 (32.77) 20 (34.48) 38 (65.51) 0.09 2.96 0.85–10.36
 No 123 (29.08) 35 (28.45) 88 (71.54)    
Chronic renal disorder
 Yes 27 (39.71) 11 (40.74) 16 (59.25) 0.91 1.14 0.14–9.01
 No 154 (28.95) 44 (28.57) 110 (71.42)    
Smoking habitsa
 Ex-smoker 22 (44.90) 4 (18.18) 18 (81.81) 1
 Current smoker 39 (31.97) 16 (41.02) 23 (58.97) 0.09 12.96 0.64–263.94
 Non-smoker 120 (27.97) 35 (29.16) 85 (70.83) 0.23 6.4 0.3–136.99
Occupation
 Yes 97 (35.93) 22 (22.68) 75 (77.31) 0.04 1.32 1.24–3.52
 No 84 (25.45) 33 (39.28) 51 (60.71)    
Household members who have a profession in hospital care
 Yes 36 (47.37) 16 (44.44) 20 (55.55) 0.003 13.07 2.44–70.11
 No 145 (80.11) 39 (26.89) 106 (73.10)    
Skin and soft tissue infection in the last 12 months
 Yes 14 (36.84) 9 (64.28) 5 (35.71) 0.02 46.57 2.03–1068.89
 No 167 (29.72) 46 (27.54) 121 (72.45)    
Allergy
 Yes 15 (22.39) 3 (20.00) 12 (80.00) 0.06 0.1 0.01–0.82
 No 166 (31.14) 52 (11.32) 114 (88.68)    
Diabetes mellitus
 Yes 7 (36.84) 1 (14.28) 6 (85.71) 0.9 0.04 0.001–1.62
 No 174 (29.95) 54 (31.03) 20 (68.96)    
Surgery in the last 12 months
 Yes 4 (26.67) 1 (25.00) 3 (75.00) 0.82 0.65 0.02–25.57
 No 177 (30.26) 54 (30.50) 123 (69.49)    
Chronic liver disorder
 Yes 0 (0.00) 0 (0.00) 0 (0.00) 1
 No 181 (30.37) 55 (30.38) 126 (69.61)    
Use of steroids
 Yes 3 (25.0) 1 (33.33) 2 (66.66) 0.22 13.95 0.21–912.44
 No 178 (30.27) 54 (30.38) 124 (69.66)    
Oral contraceptive
 Yes 8 (21.62) 3 (37.5) 5 (62.5) 0.31 4.61 0.24–89.79
 No 173 (30.73) 52 (30.05) 121 (69.94)    
Alcoholism
 Yes 7 (41.18) 3 (42.85) 4 (57.14) 0.388 4.04 0.176–92.58
 No 174 (29.58) 52 (29.88) 122 (70.11)    
  1. a Regression was used with the first value within variable acting as reference value
  2. Variables entered: sex (male versus female), and the other variables, yes versus no.
  3. OR: Odds ratio
  4. CI: Confidence interval