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Table 4 Summary of RI determinations of electrolytes (mmol/l) in newborns and infants

From: Establishing reference intervals for electrolytes in newborns and infants using direct ISE analyzer

  

N

Outlier (Tukey)

Min. value

Max. value

Mean (95% CI)

DAP test

Lower limit (90% CI)

Upper limit (90% CI)

RI

Harris and Boyd

Na +

Newborns

60

No

126

143

133.2

P = 0.157

124.3

141.4

124-141

Combined RIs are suggested

      

(132.1-134.2)

 

(123.1-125.9)

(139.4-142.8)

  
 

Infants

57

No

127

143

136

P = 0.129

129

144.2

129-144

 
      

(135–137)

 

(127.1-130.5)

(142.6-145.5)

  
 

Combined

117

No

126

143

134.5

P = 0.327

126

143

126-143

 
      

(134–135)

 

(126–127)

(142–143)

  

K +

Newborns

60

No

4.7

8.0

6.20

P = 0.108

3.99

8.26

4.0-8.3

Combined RIs are suggested

      

(5.94-6.46)

 

(3.63-4.33)

(7.72-8.63)

  
 

Infants

57

No

4.0

7.0

5.32

P = 0.090

3.66

6.72

3.7-6.7

 
      

(5.12-5.52)

 

(3.37-3.98)

(6.39-7.07)

  
 

Combined

117

No

4.0

8.0

5.69

P = 0.118

4.01

7.9

4.0-7.9

 
      

(5.52-5.87)

 

(3.95-4.1)

(7.52-8.04)

  

Cl -

Newborns

60

No

100

115

105.9

P = 0.748

99.6

112.2

100-112

Combined RIs are suggested

      

(105.1-106.7)

 

(98.4-100.8)

(111–113.3)

  
 

Infants

57

No

100

110

104.9

P = 0.536

99.4

110.2

99-110

 
      

(104.2-105.6)

 

(98.5-100.3)

(109.2-111.2)

  
 

Combined

117

No

100

111

105.3

P = 0.39

99.7

111

100-111

 
      

(104.8-105.8)

 

(99.4-100)

(110.2-111.3)