Table 2 Clinical and laboratory data of SIRS patients with and without infections.

Parameter	Non-infection	Infection	p-value	ROC
n	135 (29.3%)	326 (70.7%)	—	—
Age	54.0 (38.9–64.2)	60.0 (43.9–70.1)	0.004	0.585
Female:Male	57:78	140:186	0.918	n.s.
BMI	25.2 (21.5–29.4)	25.0 (21.5–28.4)	0.668	n.s.
HBR	100.0 (92.0–108.0)	100.0 (91.3–109.0)	0.652	n.s.
RR	19.5 (15.8–24.0)	21.0 (16.0–24.0)	0.057	n.s.
BT	38.3 (38.0–38.8)	38.5 (38.1–39.0)	0.032	0.563
WBC (G/L)	10.0 (2.5–16.0)	11.3 (6.7–15.3)	0.094	n.s.
1,25(OH)D_d1	66.6 (35.7–111.3)	59.5 (28.6–102.3)	0.198	n.s.
1,25(OH)D_d3	60.7 (36.9–97.6)	59.5 (28.6–107.1)	0.866	n.s.
25(OH)D_d1	28.8 (16.3–48.5)	28.3 (16.9–52.1)	0.929	n.s.
25(OH)D_d3	30.3 (17.0–50.6)	28.5 (16.8–49.8)	0.906	n.s.
Calcium_d1	2.2 (2.0–2.3)	2.2 (2.0–2.3)	0.126	n.s.
Calcium_d3	2.2 (2.1–2.3)	2.2 (2.1–2.3)	0.842	n.s.
Albumin_d1	31.7 (28.2–35.7)	30.9 (26.9–34.4)	0.091	n.s.
Albumin_d3	32.2 (28.6–37.0)	31.2 (27.4–35.0)	0.051	n.s.
γ-GT_d1	67.0 (34.–174.5)	69.5 (31.0–157.5)	0.829	n.s.
γ-GT_d3	64.0 (33.0–144.0)	72.0 (35.5–158.5)	0.372	n.s.
Bilirubin_d1	0.67 (0.49–1.11)	0.67 (0.48–0.99)	0.661	n.s.
Bilirubin_d3	0.65 (0.46–0.99)	0.57 (0.42–0.84)	0.093	n.s.
Crea_d1	0.89	0.95 (0.77–1.30)	0.302	n.s.
Crea_d3	0.91	0.91 (0.75–1.20)	0.898	n.s
PCT_d1	0.27 (0.11–0.70)	0.53 (0.18–2.60)	<0.001 ^*	0.618
PCT_d3	0.18 (0.08–0.45)	0.32 (0.11–1.08)	0.001 ^*	0.610
CRP_d1	10.5 (6.6–16.1)	15.5 (9.8–22.2)	<0.001 ^*	0.637
CRP_d3	5.9 (2.6–10.8)	8.5 (4.9–15.0)	<0.001 ^*	0.627

BMI = body mass index, HBR = heart beat rate, RR = respiration rate, BT = body temperature, WBC = white blood count,_d1 = day 1,_d3 = day 3, 1,25(OH)D (pmol/ml), 25(OH)D (nmol/L), Ca = calcium (mmol/L), Alb = albumin (g/l), GGT = γ-glutamyl transferase (U/L), Bil = bilirubin (mg/dl), Crea = creatinin (mg/dl), PCT = procalcitonin (ng/ml), CRP = C-reactive protein (mg/dl), ^*statistical significance after applying the Bonferroni-Holm method.

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