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European Radiology Experimental

Table 1 Main characteristics and outcomes of patients included in the validation cohorts

From: Validating the accuracy of deep learning for the diagnosis of pneumonia on chest x-ray against a robust multimodal reference diagnosis: a post hoc analysis of two prospective studies

 

PneumOld-CT (N = 200)

PACSCAN (N = 230)

Mean age (years)

84 (79–90)a

65 (20)

Sex (% woman)

98 (49)

164 (51)

Chronic obstructive pulmonary disease

35 (18)

64 (20)

Chronic heart failure (%)

103 (52)

39 (12)

Cough

170 (85)

240 (76)

Sputum production

74 (37)

147 (46)

Hypoxemia (SaO2 < 90% on room air)

102 (51%)

49 (17)

Fever

116 (58)

112 (35)

Pneumonia confirmed (%)

133 (67)

163 (51)

Severe pneumonia (PSI cat IV-V, or CURB-65 ≥ 3)

89 (45)

118 (37)

30-day death (%)

11 (5)

13 (4)

  1. CURB-65, confusion, urea > 7 mmol/L, respiratory rate > 30/min, blood pressure < 90 mmHg, age > 65 years. PSI, Pneumonia severity index. Data are mean with standard deviation or frequencies with percentage except when marked otherwise
  2. aMedian with interquartile range
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