Table 4.
Clinical outcomes of patients (N = 915) at 3 hospitals included in a study of Staphylococcus aureus bacteremia, Los Angeles, California, 2012-2018 a
| Outcome | Low SES (n = 369) | Intermediate SES (n = 294) | High SES (n = 252) | P value b |
|---|---|---|---|---|
| Duration of SAB, median (IQR), d | 1 (1-4) | 2 (1-4) | 1 (1-4) | .78 |
| Metastatic complication | 67 (18) | 49 (17) | 56 (22) | .22 |
| 30-day mortality | 27 (7) | 27 (9) | 22 (9) | .66 |
| Hospital length of stay of survivors, median (IQR), d | 10 (6-21) | 12 (7-23) | 10 (7-19) | .21 |
| Disposition of survivors c | <.001 | |||
| Home | 199 (58) | 177 (68) | 149 (66) | |
| Skilled nursing facility | 43 (13) | 43 (16) | 53 (23) | |
| Other hospital | 34 (10) | 17 (7) | 9 (4) | |
| Rehabilitation facility | 22 (6) | 14 (5) | 10 (4) | |
| Homeless | 32 (9) | 0 | 0 | |
| Other | 11 (3) | 10 (4) | 5 (2) |
Abbreviations: IQR, interquartile range; SAB, Staphylococcus aureus bacteremia; SES, socioeconomic status.
Source of data: all data were extracted from medical records at each hospital. All values are number (percentage) unless otherwise indicated. Low SES includes people experiencing homelessness and SES quintile 1 (the quintile of people with the lowest SES), intermediate SES includes people in SES quintiles 2 and 3, and high SES includes people in SES quintiles 4 and 5 (the quintiles of people with the highest SES). SES classification was based on residential neighborhood defined at the 2010 census block–group level.
P values determined by using the Kruskal-Wallis test or analysis of variance for continuous variables and χ2 or Fisher exact test for categorical variables. P ≤ .05 was considered significant.
Data available for 341 survivors in the low-SES group, 261 survivors in the intermediate-SES group, and 226 survivors in the high-SES group. Percentages may not add to 100 because of rounding.