Table 2 Patient characteristics stratified according to red cell distribution width quartiles.

From: Initial red cell distribution width as a predictor of poor neurological outcomes in out-of-hospital cardiac arrest survivors in a prospective, multicenter observational study (the KoCARC study)

 

 ≤ 12.7%

12.8–13.5%

13.6–14.9%

 ≥ 15%

p value

n = 238

n = 243

n = 274

n = 253

Age

    

< 0.001

Median (IQR)

57.5 (49, 69)

61 (51, 73)

65 (55, 76)

66 (55, 76)

 

Sex

    

0.075

Male

178 (74.8)

180 (74.1)

194 (70.8)

165 (65.2)

 

Female

60 (25.2)

63 (25.9)

80 (29.2)

88 (34.8)

 

Initial shockable rhythm at the scene

    

< 0.001

Nonshockable

111 (51.4)

115 (52.5)

150 (59.8)

176 (74.9)

 

Shockable

105 (48.6)

104 (47.5)

101 (40.2)

59 (25.1)

 

Initial shockable rhythm in the hospital

    

0.076

Nonshockable

219 (92)

223 (91.8)

244 (89.1)

241 (95.3)

 

Shockable

19 (8)

20 (8.2)

30 (11)

12 (4.7)

 

Witnessed arrest

    

0.306

No

68 (29.1)

55 (23.1)

64 (23.9)

54 (22.2)

 

Yes

166 (70.9)

183 (76.9)

204 (76.1)

189 (77.8)

 

Bystander CPR

    

< 0.001

No

84 (37.7)

86 (39.5)

126 (50.2)

127 (55.2)

 

Yes

139 (62.3)

132 (60.6)

125 (49.8)

103 (44.8)

 

Prehospital ROSC

    

< 0.001

No

136 (57.1)

118 (48.6)

172 (62.8)

190 (75.1)

 

Yes

102 (42.9)

125 (51.4)

102 (37.2)

63 (24.9)

 

Hypertension

    

0.078

No

128 (59.3)

125 (56.6)

124 (49.4)

113 (49.6)

 

Yes

88 (40.7)

96 (43.4)

127 (50.6)

115 (50.4)

 

Diabetes mellitus

    

< 0.001

No

170 (79.1)

167 (77.3)

168 (68.6)

131 (58.2)

 

Yes

45 (20.9)

49 (22.7)

77 (31.4)

94 (41.8)

 

Dyslipidemia

    

0.390

No

199 (93.9)

192 (91)

227 (95)

196 (92.9)

 

Yes

13 (6.1)

19 (9)

12 (5)

15 (7.1)

 

Witnessed arrest

    

0.306

No

68 (29.1)

55 (23.1)

64 (23.9)

54 (22.2)

 

Yes

166 (70.9)

183 (76.9)

204 (76.1)

189 (77.8)

 

WBC count (109/L)

    

0.053

Median (IQR)

12.3 (9.8, 15.5)

12.4 (9.5, 15.5)

12.2 (9.6, 16.1)

11.3 (8.6, 15.3)

 

Total bilirubin (mg/dL)

    

< 0.001

Median (IQR)

0.5 (0.3, 0.6)

0.5 (0.3, 0.7)

0.4 (0.3, 0.7)

0.6 (0.3, 1)

 

Glucose (mg/dL)

    

< 0.001

Median (IQR)

285 (214, 346)

267 (209, 342)

265.5 (193, 350)

234 (150, 321)

 

Survival discharge

    

< 0.001

No

117 (49.2)

108 (44.4)

158 (57.7)

180 (71.2)

 

Yes

121 (50.8)

135 (55.6)

116 (42.3)

73 (28.9)

 

24-h mortality

    

< 0.001

No

190 (79.8)

178 (73.3)

198 (72.3)

157 (62.1)

 

Yes

48 (20.2)

65 (26.8)

76 (27.7)

96 (37.9)

 

30-day mortality

    

< 0.001

No

124 (52.1)

139 (57.2)

120 (43.8)

75 (29.6)

 

Yes

114 (47.9)

104 (42.8)

154 (56.2)

178 (70.4)

 

Poor CPC

    

< 0.001

No

85 (35.7)

103 (42.4)

72 (26.3)

36 (14.2)

 

Yes

153 (64.3)

140 (57.6)

202 (73.7)

217 (85.8)

 
  1. Values are shown as the number(percentage) for categorical variables and the mean (SD) or median (IQR) for other variables.
  2. p values are calculated using the chi-square test for categorical variables and the Kruskal–Wallis test for continuous variables.
  3. CPR cardiopulmonary resuscitation, RDW red cell distribution width, ROSC return of spontaneous circulation, WBC white blood cell, CPC Cerebral Performance Category.
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