Table 3 Differences of clinical characteristics between calcium and non-calcium groups
Clinical parameters | Total (n = 32,551) | Calcium (n = 10,810) | Non-calcium (n = 21,741) | P value |
|---|---|---|---|---|
Age (years) | 63.8 ± 17.9 | 63.8 ± 16.9 | 63.8 ± 18.3 | 0.98 |
Sex (male, %) | 18,089 (56.27) | 6351 (59.44) | 11,738 (54.70) | <0.001 |
SAPS-1 | 13.7 ± 5.5 | 16.0 ± 5.1 | 12.2 ± 5.2 | <0.001 |
SOFA | 5.5 ± 4.0 | 7.5 ± 3.9 | 4.4 ± 3.6 | <0.001 |
Ethnicity (n, %) | ||||
White | 21,704 (67.5) | 7260 (67.96) | 14,444 (67.3) | 0.212 |
Asian | 1166 (3.63) | 393 (3.68) | 773 (3.60) | 0.722 |
Black | 2912 (9.06) | 936 (8.76) | 1976 (9.20) | 0.195 |
Unknown | 5261 (16.4) | 1736 (16.3) | 3527 (16.4) | 0.689 |
Hispanic/latino | 1108 (3.45) | 357 (3.34) | 751 (3.50) | 0.471 |
Comorbidities (n, %) | ||||
Hypertension | 9200 (31.4) | 3267 (30.7) | 5933 (31.9) | 0.033 |
Congestive heart failure | 6288 (21.49) | 2141 (20.10) | 4147 (22.28) | <0.001 |
Chronic pulmonary disease | 5029 (17.19) | 1696 (15.92) | 3333 (17.91) | <0.001 |
Paralysis | 398 (1.36) | 140 (1.31) | 258 (1.39) | 0.610 |
Renal failure | 1933 (6.61) | 657 (6.17) | 1276 (6.86) | 0.023 |
Liver disease | 1563 (5.34) | 553 (5.19) | 1010 (5.43) | 0.390 |
Diabetes | 1637 (5.59) | 565 (5.30) | 1072 (5.76) | 0.103 |
Alcohol abuse | 1520 (5.19) | 545 (5.12) | 975 (5.24) | 0.651 |
AIDS | 208 (0.71) | 62 (0.58) | 146 (0.78) | 0.047 |
Serum iCa on ICU entry (mmol/L) | 1.130 ± 0.111 | 1.127 ± 0.104 | 1.135 ± 0.121 | <0.001 |
Serum creatinine on ICU entry (mg/dL) | 1.38 ± 1.49 | 1.36 ± 1.53 | 1.38 ± 1.47 | 0.26 |
Outcomes | ||||
28-day mortality (n, %) | 4489 (13.79) | 1393 (12.89) | 3096 (14.24) | 0.001 |
90-day mortality (n, %) | 6000 (18.43) | 1846 (17.08) | 4154 (19.11) | <0.001 |
ICU LOS (days; median IQR) | 2.11 (1.11–4.21) | 3.25 (1.89–7.04) | 1.79 (0.96–3.19) | <0.001 |
Hospital LOS (days; median; IQR) | 7 (4–14) | 10 (6–17) | 6 (4–12) | <0.001 |