Table 1. Baseline Demographics of SAB Patients Stratified by Sex.
| Variable | Sex, No. (%) | P valuea | |
|---|---|---|---|
| Male (n = 4755) | Female (n = 2760) | ||
| Age, median (IQR), y | 70 (55-80) | 71 (55-82) | .07 |
| Frailty rating | |||
| Fit | 2009 (42) | 1018 (37) | <.001 |
| Mild | 1428 (30) | 865 (31) | |
| Moderate | 928 (20) | 624 (23) | |
| Severe | 390 (8) | 253 (9) | |
| Charlson comorbidity index, median (IQR) | 10 (0-22) | 8 (0-18) | <.001 |
| Welsh Index of Multiple Deprivation | |||
| 5 (least deprived) | 708 (16) | 440 (17) | .43 |
| 4 | 757 (17) | 433 (17) | |
| 3 | 898 (20) | 544 (21) | |
| 2 | 1017 (23) | 549 (21) | |
| 1 (most deprived) | 1115 (25) | 647 (25) | |
| Missing | 260 | 147 | NA |
| Attribution | |||
| Community | 2115 (44) | 1130 (41) | .003 |
| Hospital | 2640 (56) | 1630 (59) | |
| MRSA | 646 (14) | 311 (11) | .004 |
| CRP, mg/dL | |||
| Under 100 | 788 (19) | 507 (21) | <.001 |
| 10-20 | 1274 (30) | 558 (23) | |
| 20-30 | 1099 (26) | 623 (26) | |
| 30-40 | 759 (18) | 466 (19) | |
| ≥40 | 304 (7) | 283 (12) | |
| Missing | 531 | 323 | NA |
| Peak CRP, median (IQR), mg/L | 205 (122-301) | 225 (118-323) | <.001 |
| 30-d mortality | 1262 (27) | 795 (29) | .03 |
| 90-d mortality | 1690 (36) | 1022 (37) | .20 |
Abbreviations: CRP, C-reactive protein; MRSA, methicillin-resistant Staphylococcus aureus; NA, not applicable.
SI conversion factor: To convert C-reactive protein to milligrams per liter, multiple by 10.
a
Wilcoxon rank sum test; Pearson χ2 test.