Table 1. Demographic and clinical characteristics of adults with invasive streptococcal infection compared with the general adult population, Anchorage, Alaska, USA, 2002–2015*.
| Characteristic | Persons experiencing homelessness | General population | p value |
|---|---|---|---|
| Group A Streptococcus case-patients | 56 | 229 | |
| Age, y, mean (SD) | 51 (11) | 54 (19) | 0.27 |
| Sex | |||
| M | 43 (77) | 122 (53) | <0.01 |
| F | 13 (23) | 107 (47) | |
| Diagnosis | |||
| Cellulitis | 37 (66) | 107 (47) | 0.01 |
| Pneumonia | 11 (20) | 43 (19) | 0.88 |
| Necrotizing fasciitis | 9 (16) | 14 (6) | 0.01 |
| Bacteremia | 4 (7) | 46 (20) | 0.03 |
| Other conditions | |||
| Diabetes | 5 (9) | 68 (30) | <0.01 |
| Intravenous drug use | 5 (9) | 8 (3) | 0.14 |
| Alcohol abuse | 42 (75) | 23 (52) | <0.01 |
| Death during episode |
6 (11) |
29 (13) |
0.69 |
| Group B Streptococcus case-patients | 6 | 194 | |
| Age, y, mean (SD) | 53 (11) | 60 (16) | 0.28 |
| Sex | |||
| M | 4 (67) | 97 (50) | 0.68 |
| F | 2 (33) | 97 (50) | |
| Diagnosis | |||
| Cellulitis | 1 (16) | 63 (32) | 0.67 |
| Pneumonia | 2 (33) | 24 (12) | 0.13 |
| Necrotizing fasciitis | 0 | 0 | NA |
| Bacteremia | 2 (33) | 63 (32) | 1.00 |
| Other conditions | |||
| Diabetes | 0 | 89 (46) | 0.03 |
| Intravenous drug use | 0 | 4 (2) | 0.72 |
| Alcohol abuse | 5 (83) | 21 (11) | <0.01 |
| Death during episode |
2 (33) |
15(7) |
0.08 |
| S. pneumoniae case-patients | 84 | 457 | |
| Age, y, mean (SD) | 48 (9) | 57 (17) | <0.01 |
| Sex | |||
| M | 55 (65) | 258 (56) | 0.124 |
| F | 29 (35) | 199 (44) | |
| Diagnosis | |||
| Cellulitis | 3 (4) | 8 (2) | 0.39 |
| Pneumonia | 76 (90) | 369 (81) | 0.03 |
| Necrotizing fasciitis | 0 (0) | 1 (0) | 1.00 |
| Bacteremia | 4 (5) | 53 (12) | 0.08 |
| Other conditions | |||
| Diabetes | 6 (7) | 85 (19) | 0.01 |
| Intravenous drug use | 3 (4) | 8 (2) | 0.39 |
| Alcohol abuse | 74 (88) | 130 (28) | <0.01 |
| Death during episode | 6 (7) | 60 (13) | 0.15 |
*Values are no. (%) unless otherwise indicated. General population excludes persons experiencing homelessness. p values based on χ2 or Fisher exact test. NA, not applicable.