Table 1.
Patient factors for the overall cohort and by causative organism
| Overall Cohort (n=103) | CONS (n=57) | S. aureus (n=19) | Gram-negative organisms (n=9) | |
|---|---|---|---|---|
| Age at initial placement, n (%) | ||||
| 0–30 days | 39 (38) | 20 (35) | 6 (32) | 5 (56) |
| 1–6 month | 39 (38) | 26 (46) | 6 (32) | 1 (11) |
| 7–48 months | 13 (13) | 6 (11) | 2 (11) | 2 (22) |
| > 48 months | 12 (11) | 5 (9) | 5 (26) | 1 (11) |
| Age at most recent surgery, n (%) | ||||
| 0–30 days | 28 (27) | 13 (23) | 5 (26) | 4 (44) |
| 1–6 month | 34 (33) | 21 (37) | 5 (26) | 1 (11) |
| 7–48 months | 19 (18) | 13 (23) | 2 (11) | 3 (33) |
| > 48 months | 22 (21) | 10 (18) | 7 (37) | 1 (11) |
| Gender (male), n (%) | 64 (62) | 36 (63) | 13 (68) | 5 (56) |
| Ethnicity, n (%) | ||||
| Caucasian | 82 (80) | 47 (82) | 17 (89) | 4 (44) |
| Hispanic | 9 (9) | 4 (7) | 1 (5) | 2 (22) |
| Other | 12 (12) | 6 (11) | 1 (5) | 3 (33) |
| Insurance, n (%) | ||||
| Private | 62 (60) | 34 (60) | 11 (58) | 6 (67) |
| Medicaid | 39 (38) | 22 (39) | 8 (42) | 2 (22) |
| Self pay | 2 (2) | 1 (2) | 0 (0) | 1 (11) |
| Indication for shunt placement, n (%) | ||||
| Post-IVH due to prematurity | 22 (21) | 14 (25) | 4 (21) | 0 (0) |
| Aqueductal stenosis | 16 (16) | 11 (19) | 3 (16) | 1 (11) |
| Cyst (posterior fossa, intracranial) | 15 (15) | 6 (11) | 4 (21) | 3 (33) |
| Congenital | 13 (13) | 7 (12) | 3 (16) | 0 (0) |
| Myelomeningocele | 12 (12) | 6 (11) | 0 (0) | 2 (22) |
| Tumor | 7 (7) | 4 (7) | 1 (5) | 1 (11) |
| Spontaneous ICH/IVH/SAH | 5 (5) | 3 (5) | 2 (11) | 0 (0) |
| Post-infectious | 5 (5) | 3 (5) | 0 (0) | 1 (11) |
| Post-head injury | 5 (5) | 3 (5) | 0 (0) | 0 (0) |
| Other | 3 (3) | 0 (0) | 2 (11) | 1 (11) |
| Complex chronic conditions, n (%) | ||||
| None (except hydrocephalus) | 85 (83) | 47 (82) | 14 (74) | 9 (100) |
| One | 10 (10) | 4 (7) | 3 (16) | 0 (0) |
| Two or more | 8 (8) | 6 (11) | 2 (11) | 0 (0) |
| Distant shunt locations, n (%) | ||||
| Peritoneal | 97 (94) | 53 (93) | 19 (100) | 9 (100) |
| Atrial | 6 (6) | 4 (7) | 0 (0) | 0 (0) |
| Revisions before first infection, n (%) | ||||
| Zero | 60 (58) | 35 (61) | 11 (58) | 4 (44) |
| One | 28 (27) | 14 (25) | 4 (21) | 0 (0) |
| Two | 15 (15) | 8 (14) | 4 (21) | 5 (56) |
| Age at CSF shunt infection, n (%) | ||||
| 0–30 days | 13 (13) | 8 (14) | 1 (5) | 1 (11) |
| 1–6 months | 43 (42) | 22 (39) | 8 (42) | 4 (44) |
| 7–48 months | 30 (29) | 21 (37) | 4 (21) | 3 (33) |
| > 48 months | 17 (17) | 6 (11) | 6 (32) | 1 (11) |
*
p<0.05
CONS coagulase-negative Staphylococcus, CSF cerebrospinal fluid, ICH intracerebral hemorrhage, IVH intraventricular hemorrhage, SAH subarachnoid hemorrhage