Table 1. Outcomes and severity markers for patients with CT values ≤25 or > 25.
| Variable | CT≤25 (n/N (%)) |
CT>25 (n/N (%)) |
P value* | CT≤24 (n/N (%)) |
CT>24 (n/N (%)) |
P value* | CT≤25 and Binary toxin PCR positive (N (%)) |
CT≤25 and Binary toxin PCR negative (N (%)) |
P value* |
|---|---|---|---|---|---|---|---|---|---|
| All NAAT patients | |||||||||
| CTA positive | 366/436 (83.9) | 347/838 (41.4) | <0.001 | 278/323 (86.1) | 435/523 (45.4) | <0.001 | 100/112 (89.3) | 266/324 (82.1) | 0.10 |
| Died | 54/310 (17.4) | 69/575 (12.0) | 0.032 | 41/233 (17.6) | 82/652 (12.6) | 0.52 | 20/79 (25.3) | 34/231 (14.7) | 0.049 |
| Recurrence | 36/189 (19.0) | 42/307 (13.7) | 0.111 | 27/145 (18.6) | 51/351 (14.5) | 0.70 | |||
| Had PCR-ribotype 027 | 46/272 (16.9) | 41/387 (10.6) | 0.025 | 35/323 (10.8) | 52/958 (5.4) | 0.003 | 42/79 (53.2) | 1/189 (0.5) | <0.001 |
| Median length of stay (days) | 28 | 23 | 0.77 | n/ac | n/ac | n/ac | 20 | 29 | 0.11 |
| Mean white cell count (x109/L) | 12.1 | 10.9 | 0.3 | n/ac | n/ac | n/ac | 13.2 | 11.8 | 0.13 |
| Mean serum creatinine (mg/dL) | 120.0 | 110.7 | 0.04 | n/ac | n/ac | n/ac | 112.9 | 111.8 | 0.006 |
| Mean serum albumin (g/L) | 31.3 | 32.4 | 0.34 | n/ac | n/ac | n/ac | 31.0 | 31.3 | 0.46 |
| All NAAT positive patients with PCR-ribotype 027 | |||||||||
| Median length of stay (days) | 32.5 | 28 | 0.018 | n/ac | n/ac | n/ac | N/A | N/A | |
| Died | 11/33 (33.3) | 26/170 (15.3) | 0.024b | n/ac | n/ac | n/ac | 11/32 (34.4) | 0/1 (0) | 0.66b |
Table showing the outcomes and severity markers for patients with CT values ≤25 or > 25
* T-test for comparisons of means, Mann Whitney for comparisons of medians, Chi-squared for categorical comparisons.
b fishers exact probability.
c CT≤24 not investigated further as low CT defined as ≤5 for further analyses.