Table 1 Baseline characteristics of enrolled patients

Sex, n (%)

0.129

 • Men

62 (42.20)

75 (51.00)

 • Women

85 (57.80)

72 (49.00)

Age (years), mean ± SD (min–max)

47.90 ± 16.77 (17–88)

53.71 ± 18.80 (19–91)

0.006

Weight, mean ± SD (min–max)

70.92 ± 16.83 (40.00–128.00)

71.05 ± 21.85 (38.50–165.00)

0.954

Height (cm), mean ± SD (min–max)

162.09 ± 8.54 (145.00–190.00)

161.78 ± 9.00 (140.00–185.00)

0.768

BMI (kg/m²), mean ± SD (min–max)

27.05 ± 5.62 (16.18–41.32)

26.81 ± 6.95 (0.00–50.93)

0.752

Serum calcium at enrollment (mg/dL), mean ± SD (min–max)

8.89 ± 0.48 (6.80–9.70)

8.98 ± 0.56 (6.80–10.50))

0.199

Serum phosphate at enrollment (mg/dL), mean ± SD (min–max)

3.54 ± 1.14 (2.20–13.00)

3.57 ± 0.73 (2.40–6.90)

0.819

Serum 25OHD at enrollment (ng/mL), mean ± SD (min–max)

22.50 ± 11.52 (7.31–56.27)

20.84 ± 13.59 (3.80–56.32)

0.269

PSI at enrollment, median (IQR)

46.00 (29.00)

50.00 (31.00)

0.045

PSI risk class, n (%)

0.549

 • Low (≤ 90)

135 (91.84)

135 (91.84)

 • Moderate (91–130)

11 (7.48)

9 (6.12)

 • High (> 130)

1 (0.68)

3 (2.04)

PSI risk class, n (%)

0.230

 • < 50

86 (58.50)

75 (51.02)

 • 51–70

38 (25.85)

38 (25.85)

 • 71–90

11 (7.48)

22 (14.97)

 • 91–130

11 (7.48)

9 (6.12)

 • > 130

1 (0.68)

3 (2.04)

Oxygen supplement, n (%)

0.756

 • Ambient air

86 (58.50)

91 (61.90)

 • Cannula and noninvasive oxygen support

53 (36.05)

47 (31.97)

 • Endotracheal tube

8 (5.44)

9 (6.12)

Steroid use, days

 • Number of patients

76

82

0.430

 • Course steroid use, days, median (IQR)

7.00 (6.00)

6.00 (6.25)

Medical conditions, n (%)

0.594

 • Diabetes mellitus

24 (16.32)

23 (15.65)

 • Chronic kidney disease

2 (1.36)

4 (2.72)

 • Cerebrovascular disease

3 (2.04)

5 (3.40)