Table 3 Univariate and multivariate analysis of risk factors associated with Staphylococcus aureus nasal carriage between CR and HW at Sun Yat-Sen University, Guangzhou, Southern China

Gender

Male

45(33.1)

91(66.9)

0.004

2.16(1.27–3.68)

0.005

2.15(1.27–3.68)

23(22.5)

81(77.5)

0.871

1.05(0.59–1.88)

Female

30(18.6)

131(81.4)

40(21.3)

148(78.7)

Age, years

≤20

43(34.1)

83(65.9)

0.003

0.23(0.09–0.58)

0.004

3.88(1.54–9.79)

1(16.7)

5(83.3)

1.089

0.56(0.03–10.93)

>20–30

18(26.5)

50(73.5)

0.032

0.33(0.12–0.91)

0.047

2.78(1.01–7.62)

38(22.0)

135(78.0)

0.619

0.40(0.05–3.21)

>30–50

8(17.0)

39(83.0)

0.356

0.59(0.19–1.83)

0.356

1.71(0.55–5.34)

23(22.3)

80(77.7)

0.61

0.39(0.05–3.21)

>50

6(10.7)

50(89.3)

1

1

1(10.0)

9(90.0)

1

Use of antibiotics in the last 4 weeks

Yes

4(20.0)

16(80.0)

0.577

0.73(0.24–2.24)

3(13.6)

19(86.4)

0.356

0.55(0.16–1.93)

No

71(25.6)

206(74.4)

60(22.2)

210(77.8)

^bNasal cavity cleaning habits

Frequently

13(13.0)

87(87.0)

<0.001

0.33(0.17–0.63)

<0.001

6.90(3.62–13.17)

23(18.5)

101(81.5)

0.282

0.73(0.41–1.30)

Occasionally

62(31.5)

135(68.5)

40(23.8)

128(76.2)

Prior hospitalization in the last 12 months

Yes

4(36.4)

7(63.6)

0.393

1.73(0.49–6.09)

3(21.4)

11(78.6)

1.001

0.99(0.27–3.67)

No

71(24.8)

215(75.2)

60(21.6)

218(78.4)

^aUnderlying disease

Yes

11(36.7)

19(63.3)

0.134

1.84(0.83–4.06)

2(20.0)

8(80.0)

0.902

0.906(0.19–4.38)

No

64(24.0)

203(76.0)

61(21.6)

221(78.4)

Any family membera HW

Yes

13(25.0)

39(75.0)

0.963

0.984(0.49–1.96)

13(16.5)

66(83.5)

<0.001

0.34(0.17–0.67)

0.002

2.97(1.50–5.95)

No

62(25.3)

183(74.7)

50(37.0)

85(63.0)