TABLE 2-A1.
Clinical, laboratory and epidemiological characteristics of samples grouped according to culture.
| Variable | Group | Statistical comparison (p-value) | |||||||
|---|---|---|---|---|---|---|---|---|---|
|
| |||||||||
| Spn (N = 55) |
NSpn (N = 140) |
NG (N = 17) |
Spn vs NSpn vs NG | Spn vs. NSpn | Spn vs. NG | ||||
| N | % | N | % | N | % | ||||
| Clinical | - | - | - | - | - | - | < 0.001 | < 0.001 | 0.884 |
| Respiratory illness | 34 | 62 | 22 | 16 | 9 | 53 | - | - | - |
| Meningitis | 7 | 13 | 4 | 3 | 2 | 12 | - | - | - |
| Other | 2 | 4 | 86 | 61 | 1 | 6 | - | - | - |
| No data | 12 | 22 | 28 | 20 | 5 | 9 | - | - | - |
| Autolysis† | - | - | - | - | - | - | < 0.001 | < 0.001 | 0.004 |
| Yes | 31 | 56 | 22 | 16 | 16 | 94 | - | - | - |
| No | 24 | 44 | 118 | 84 | 1 | 6 | - | - | - |
| Gram stain | - | - | - | - | - | - | < 0.001 | < 0.001 | 0.112 |
| Pairs | 38 | 69 | 27 | 19 | 15 | 88 | - | - | - |
| Chains | 16 | 29 | 63 | 45 | 1 | 6 | - | - | - |
| Cocci | 1 | 2 | 50 | 36 | 1 | 6 | - | - | - |
| Healthcare facility of origin | - | - | - | - | - | - | < 0.001 | 0.001 | 0.360 |
| Tertiary level care hospital | 12 | 22 | 66 | 47 | 2 | 12 | - | - | - |
| Primary or secondary level care hospitals | 43 | 78 | 74 | 53 | 15 | 88 | - | - | - |
| Community versus nosocomial infection ‡ | - | - | - | - | - | - | < 0.001 | < 0.001 | 0.461 |
| Community | 37 | 67 | 52 | 37 | 14 | 82 | - | - | - |
| Nosocomial | 17 | 31 | 88 | 63 | 3 | 18 | - | - | - |
| No data | 1 | 2 | 0 | 0 | 0 | 0 | - | - | - |
Spn, Growth of S. pneumoniae on culture; NSpn, Growth of an organism other than S. pneumoniae on culture; NG, No growth of any organism on culture.
†
, Autolysis was determined by the subjective presence of brown discoloration of the blood culture broth;
‡
, Community versus nosocomial infection was determined as per the study definition.