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Table 3 Respiratory rate and arterial blood gases data available at arrival in the ED and the time a decision was made to admit or discharge to home.

From: The IRYSS-COPD appropriateness study: objectives, methodology, and description of the prospective cohort

 

Without assumptions on missing data

With assumptions on missing data

 

Arrival at ED

Decision time

Arrival at ED

Decision time

 

N

% missing

n(%)

N

% missing

n(%)

N

% missing

n(%)

N

% missing

n(%)

Respiratory Rate

2314

19.6

 

1536

46.6

 

2621

8.9

 

2200

23.5

 

   <20

  

435 (18.80)

  

453 (29.49)

  

435 (16.60)

  

673 (30.59)

   20-24

  

832 (35.96)

  

713 (46.42)

  

1139 (43.46)

  

1084 (49.27)

   >24

  

1047 (45.25)

  

370 (24.09)

  

1047 (39.95)

  

443 (20.14)

pH

2494

13.3

 

747

74.0

 

2661

7.5

 

2410

16.2

 

   >=7.35

  

2141 (85.85)

  

626 (83.80)

  

2308 (86.73)

  

2227 (92.41)

   7.26-7.35

  

293 (11.75)

  

105 (14.06)

  

293 (11.01)

  

160 (6.64)

   <7.26

  

60 (2.41)

  

16 (2.14)

  

60 (2.25)

  

23 (0.95)

PO2

2469

14.2

 

742

74.2

 

2642

8.17

 

2228

22.6

 

   >60

  

1130 (45.77)

  

346 (46.63)

  

1303 (49.32)

  

1434 (64.36)

   45 - 60

  

979 (39.65)

  

316 (42.59)

  

979 (37.06)

  

668 (29.98)

   <=45

  

360 (14.58)

  

80 (10.78)

  

360 (13.63)

  

126 (5.66)

PCO2

2485

13.6

 

744

74.1

 

2485

13.6

 

1992

30.76

 

   <=45

  

1365 (54.93)

  

313 (42.07)

  

1365 (54.93)

  

1106 (55.52)

   45-55

  

592 (23.82)

  

204 (27.42)

  

592 (23.82)

  

544 (27.31)

   55-65

  

288 (11.59)

  

118 (15.86)

  

288 (11.59)

  

184 (9.24)

   >65

  

240 (9.66)

  

109 (14.65)

  

240 (9.66)

  

158 (7.93)