Table 3. MRSA prevalence among related workers in aspect of demographic and clinical data.
| Characteristics | No. (%) of subjects* | OR | 95% CI | p value | |
| MRSA (n = 13) | Non-MRSA (n = 87) | ||||
| Age | |||||
| Younger than 30 yrs | 1 (7.7) | 14 (16.1) | 0.25 | 0.02–3.25 | 0.265 |
| 30–45 yrs | 4 (30.8) | 28 (32.2) | 0.50 | 0.08–3.31 | 0.466 |
| 45–60 yrs | 4 (30.8) | 31 (35.6) | 0.45 | 0.07–2.98 | 0.400 |
| Older than 60 yrs | 2 (15.4) | 7 (8.0) | Ref. | – | – |
| Gender | |||||
| Female | 5 (38.5) | 11 (12.6) | 4.26 | 1.18–15.39 | 0.027 |
| Male | 8 (61.5) | 75 (86.2) | Ref. | – | – |
| Occupation | |||||
| Pig farm worker | 10 (72.9) | 42 (48.3) | 1.03 | 0.25–4.32 | 0.002 |
| Auction market employer | 0 (0) | 32 (36.8) | – | – | – |
| Regular visitor | 3 (23.1) | 13 (14.9) | Ref. | – | – |
| Seniority | |||||
| Less than 5 years | 2 (15.4) | 26 (29.9) | 1.15 | 0.10–13.82 | 0.910 |
| 5–9 year | 4 (30.8) | 10 (11.5) | 6.00 | 0.58–61.84 | 0.132 |
| 10–14 year | 1 (7.7) | 15 (17.2) | Ref. | – | – |
| At least 15 years | 6 (46.2) | 35 (40.2) | 2.57 | 0.28–23.25 | 0.401 |
| Diabetes | |||||
| Yes | 0 (0) | 4 (4.6) | Ref. | ||
| No | 13 (100) | 82 (94.3) | 1.05 | 1.00–1.10 | 0.427 |
| Hypertension | |||||
| Yes | 1 (7.7) | 12 (13.8) | Ref. | – | – |
| No | 12 (92.3) | 74 (85.1) | 1.95 | 0.23–16.36 | 0.533 |
| Smoking habit | |||||
| Yes | 3 (23.1) | 29 (33.3) | Ref. | – | – |
| No | 10 (76.9) | 57 (65.5) | 1.70 | 0.43–6.64 | 0.444 |
| Contact of second-hand smoke | |||||
| Yes | 6 (46.2) | 37 (42.5) | 1.14 | 0.35–3.66 | 0.832 |
| No | 7 (53.8) | 49 (56.3) | Ref. | – | – |
| Animal-related occupation of family members | |||||
| Yes | 2 (15.4) | 23 (26.4) | 0.50 | 0.10–2.42 | 0.380 |
| No | 11 (84.6) | 63 (72.4) | Ref. | – | – |
| Medical-related occupation of households | |||||
| Yes | 2 (15.4) | 2 (2.3) | 7.64 | 0.98–59.81 | 0.026 |
| No | 11 (84.6) | 84 (96.6) | Ref. | – | – |
| Visit times of slaughterhouse within one year | |||||
| Less than 10 times | 9 (69.2) | 30 (34.5) | 1.50 | 0.41–5.54 | 0.541 |
| 10–19 times | 4 (30.8) | 20 (23.0) | Ref. | – | – |
| 20–29 times | 0 (0) | 1 (1.1) | – | – | – |
| At least 30 times | 0 (0) | 35 (40.2) | – | – | – |
| Current usage of tubes of households or himself | |||||
| Yes | 0 (0) | 0 (0) | Ref. | – | – |
| No | 13 (100) | 86 (100) | 0.16 | 0.00–8.20 | 0.36 |
| Hospitalization or surgery history within one year of households or himself | |||||
| Yes | 1 (7.7) | 8 (9.2) | 0.81 | 0.09–7.09 | 0.851 |
| No | 12 (92.3) | 78 (89.7) | Ref. | – | – |
| Antibiotics use within one month | |||||
| Yes | 0 (0) | 11 (12.6) | 0.24 | 0.01–4.38 | 0.338 |
| No | 13 (100) | 75 (86.2) | Ref. | – | – |
OR: odds ratio; CI: confidence interval.
*Full demographic and clinical data were not available for all participants.
Female is the only risk factor found among these demographic and clinical data, the odd ratio of which is 4.26 (95% CI1.18–15.39) with p value 0.027.