Table 2 Prevalence of baseline nasal colonization among the different variables under study (N = 756)
From: Prevalence of Nasal colonization with Staphylococcus aureus in 4 cities in Peru
Variable | Baseline Nasal colonization (%, 95 % CI) | P value | |
|---|---|---|---|
Positive (n = 73) | Negative (n = 683) | ||
Age | |||
18 – 29 years | 10.2 (7.4 – 13.0) | 89.8 (86.9 – 92.6) | 0.537a |
30 – 39 years | 6.3 (1.4 – 11.2) | 93.7 (88.8 – 98.6) | |
40 – 49 years | 11.3 (6.2 – 16.3) | 88.7 (83.7 – 93.8) | |
50 years or more | 6.7 (0.3 – 13.0) | 93.3 (86.9 – 99.7) | |
Time of service | |||
10 years or less | 10.6 (7.8 – 13.4) | 89.4 (86.6 – 92.2) | 0.334 |
11 – 20 years | 5.8 (1.3 – 10.4) | 94.2 (89.6 – 98.7) | |
20 years or more | 9.5 (5.3 – 13.7) | 90.5 (86.3 – 94.7) | |
Sex | |||
Female | 6.8 (2.7 – 10.9) | 93.2 (89.0 – 97.3) | 0.201 |
Male | 10.3 (7.9 – 12.7) | 89.7 (87.3 – 92.1) | |
Rank | |||
Officers | 9.5 (3.2 – 15.8) | 90.5 (84.2 – 96.8) | 0.340 |
Non-Commissioned Officers | 8.2 (5.3 – 10.9) | 91.8 (89.0 – 94.7) | |
Troops | 11.5 (7.9 – 15.1) | 88.5 (84.9 – 92.1) | |
Base of recruitment | |||
Iquitos | 9.1 (5.5 – 12.6) | 90.9 (87.4 – 94.5) | 0.023 |
Arequipa | 14.0 (8.7 – 19.4) | 85.9 (80.6 – 91.3) | |
Talara | 4.3 (11.8 – 7.5) | 95.7 (92.5 – 98.8) | |
Lima | 11.3 (6.6 – 15.9) | 88.7 (84.0 – 93.4) | |
Number of activities | |||
Not related | 10.4 (4.5 – 16.2) | 89.6 (83.8 – 95.5) | 0.587 |
Unique | 9.1 (6.8 – 11.5) | 90.9 (88.5 – 93.2) | |
Multiple | 12.9 (4.9 – 20.8) | 87.1 (79.2 – 95.1) | |
Number of medical conditions | |||
None | 9.9 (7.5 – 12.3) | 90.1 (87.7 – 92.5) | 0.122 |
One disease | 6.1 (1.7 – 10.5) | 93.9 (89.5 – 98.3) | |
More than one disease | 17.6 (4.6 – 30.7) | 82.4 (69.3 – 95.4) | |
Respiratory diseases the previous year | |||
No | 9.1 (7.0 – 11.2) | 90.9 (88.8 – 92.9) | 0.002 |
Yes | 30.0 (9.4 – 50.6) | 70.0 (49.4 – 90.6) | |
Use of antibiotics the previous year | |||
No | 9.1 (6.4 – 11.9) | 90.9 (88.1 – 93.6) | 0.598 |
Yes | 11.0 (7.2 – 14.8) | 88.9 (85.2 – 92.8) | |
Unknown | 7.6 (11.3 – 14.0) | 92.4 (85.9 – 98.9) | |
Use of dicloxacillin previous year | |||
No | 9.3 (7.2 – 11.4) | 90.7 (88.6 – 92.8) | 0.005 |
Yes | 33.3 (5.4 – 61.2) | 66.7 (38.8 – 94.6) | |
Use of corticosteroids the previous year | |||
No | 8.9 (6.5 – 11.4) | 91.0 (88.6 – 93.5) | 0.432 |
Yes | 12.4 (7.2 – 17.7) | 87.6 (82.3 – 92.8) | |
Unknown | 8.9 (2.1 – 15.9) | 91.0 (84.1 – 97.9) | |
Hospitalized during the previous year | |||
No | 9.6 (7.3 – 11.9) | 90.4 (88.1 – 92.7) | 0.971 |
Yes | 10.2 (3.8 – 16.6) | 89.8 (83.4 – 96.2) | |
Unknown | 8.7 (0.0 – 20.5) | 91.2 (79.5 – 100) | |
Diagnosis of SSTIs during the previous year | |||
No | 9.5 (7.3 – 11.8) | 90.5 (88.2 – 92.7) | 0.848 |
Yes | 9.1 (0.5 – 17.7) | 90.9 (82.3 – 99.5) | |
Unknown | 12.2 (5.2 – 22.4) | 87.8 (77.6 – 97.9) | |
Smoking status | |||
Never | 8.1 (5.2 – 11.0) | 91.9 (88.9 – 94.8) | 0.297 |
Past smoker | 12.7 (6.9 – 18.5) | 87.3 (81.5 – 93.1) | |
Current smoker | 10.4 (6.7 – 14.2) | 89.6 (85.8 – 93.3) | |
Place of residence | |||
Barracks | 11.2 (7.3 – 15.1) | 88.8 (84.9 – 92.7) | 0.198 |
Inside the base | 5.3 (1.1. – 9.4) | 94.7 (90.6 – 98.9) | |
Outside the base | 9.9 (6.9 – 12.9) | 90.1 (87.1 – 93.0) | |