Table 4. Incidence rate of hypophosphatemia and hypokalemia.
| Hypophosphatemia | Hypokalemia | ||||
|---|---|---|---|---|---|
| IRR (95% CI) | p-value | IRR (95% CI) | p-value | ||
| Group 2 vs. 1 | 1.14 (0.87–1.50) | 0.698 | Group 2 vs. 1 | 0.69 (0.39–1.20) | 0.301 |
| 3 vs. 1 | 0.45 (0.33–0.61) | <0.001 | 3 vs. 1 | 0.50 (0.29–0.88) | 0.010 |
| 3 vs. 2 | 0.39 (0.29–0.53) | <0.001 | 3 vs. 2 | 0.74 (0.41–1.33) | 0.658 |
| Age | 1.00 (0.99–1.0) | 0.550 | Age | 0.98 (0.97–0.99) | 0.004 |
| BMI | 0.97 (0.95–0.99) | 0.032 | BMI | 0.97 (0.92–1.01) | 0.172 |
| Female (vs. Male) | 1.20 (0.99–1.45) | 0.065 | Female (vs. Male) | 1.49(1.03–2.17) | 0.034 |
| APACHEII | 1.0 (0.99–1.01) | 0.772 | APACHEII | 0.99 (0.96–1.02) | 0.451 |
| GCS | 1.0 (0.98–1.02) | 0.792 | GCS | 1.08 (1.03–1.13) | <0.001 |
| Serum P_baseline | 0.92 (0.88–0.96) | <0.001 | Serum K_baseline | 0.53 (0.43–0.66) | <0.001 |
IRR, incidence rate ratio; CI, confidence interval; RRT, continuous renal replacement therapy; APACHE II, Acute Physiology and Chronic Health Evaluation; GCS, Glasgow Coma Scale Hypophosphatemia is defined as serum phosphate was < 2.6 mg/dL, and hypokalemia as serum potassium was < 3.5 mmol/L.