Table 1 Clinical Data of patients with severe or non-severe psittacosis pneumonia

Age, y, median (IQR)

60(49, 69)

61(50, 69)

59(48, 68)

0.144

Male sex

341(60.2)

189(64.7)

152(55.5)

0.025

Poultry exposure

428(75.6)

221(75.7)

207(75.5)

0.970

Underlying diseasea^a

212(37.5)

126(43.2)

86(31.4)

0.004

Hypertension

105(18.6)

56(19.2)

49(17.9)

0.692

Diabetes

65(11.5)

44(15.1)

21(7.7)

0.006

Chronic cardiovascular diseases

41(7.2)

32(11.0)

9(3.3)

<0.001

Chronic hepatopathy

28(4.9)

15(5.1)

13(4.7)

0.830

Chronic respiratory disease

17(3.0)

11(3.8)

6(2.2)

0.272

Immunocompromised state^b

16(2.8)

5(1.7)

11(4.0)

0.099

Autoimmune disease

9(1.6)

3(1.0)

6(2.2)

0.269

Pregnancy

5(0.9)

5(1.7)

0(0)

0.030

Manifestation

Fever

545(96.3)

282(96.6)

263(96.0)

0.711

Cough

418(73.9)

225(77.1)

193(70.4)

0.073

Dyspnea

245(43.3)

188(64.4)

57(20.8)

<0.001

Fatigue

238(42.0)

124(42.5)

114(41.6)

0.836

Chills

202(35.7)

93(31.8)

109(39.8)

0.049

Myalgia

120(21.2)

50(17.1)

70(25.5)

0.014

Neuropsychiatric symptoms

114(20.1)

88(30.1)

26(9.5)

<0.001

Gastrointestinal symptom

158(27.9)

97(33.2)

61(22.3)

0.004

Headache

132(23.3)

60(20.5)

72(26.3)

0.107

Relative bradycardia

21(3.7)

15(5.1)

6(2.2)

0.064

Hemoptysis

38(6.7)

25(8.6)

13(4.7)

0.070

Rash

7(1.2)

3(1.0)

4(1.5)

0.642

Imaging

Multilobar infiltrates

318(56.2)

214(73.3)

104(38.0)

<0.001

Pleural effusion

251(44.3)

165(56.5)

86(31.4)

<0.001

Laboratory Examination

WBC ↑

N% ↑

129(22.8)

339(59.9)

75(25.7)

177(60.6)

54(19.7)

162(59.1)

0.090

0.717

Complication

Failure of respiration

292(51.6)

255(87.3)

37(13.5)

<0.001

Hepatic injury

295(52.1)

175(59.9)

120(43.8)

<0.001

Hyponatremia

109(19.3)

64(21.9)

45(16.4)

0.098

Shock

72(12.7)

71(24.3)

1(0.4)

<0.001

Renal injury

78(13.8)

69(23.6)

9(3.3)

<0.001

Coagulation disorders

45(7.9)

39(13.4)

6(2.2)

<0.001

Hypokalemia

60(10.6)

37(12.7)

23(8.4)

0.099

MODS

41(7.2)

40(13.7)

1(0.4)

<0.001

Cardiac insufficiency

38(6.7)

35(12.0)

3(1.1)

<0.001

Rhabdomyolysis

12(2.1)

9(3.1)

3(1.1)

0.101

Meningitis

6(1.1)

5(1.7)

1(0.4)

0.118

Hemophagocytic syndrome

2(0.4)

2(0.7)

0(0)

0.170

Outcomes

Invasive ventilation

183(32.3)

183(62.7)

0(0)

<0.001

CRRT

28(4.9)

28(9.6)

0(0)

<0.001

ECMO

30(5.3)

30(10.3)

0(0)

<0.001

Death

26(4.6)

26(8.9)

0(0)

<0.001