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Table 1 Analysis of variability between training set and internal validation set

From: Construction and validation of a line chart for gestational diabetes mellitus based on clinical indicators

Variables

Total (n = 265)

1 (n = 186)

2 (n = 79)

Statistic

P

ImpactOnEating, n(%)

   

χ²=0.00

0.995

1

171 (64.53)

120 (64.52)

51 (64.56)

  

2

94 (35.47)

66 (35.48)

28 (35.44)

  

FamilyHistory, n(%)

   

χ²=0.03

0.863

1

35 (13.21)

25 (13.44)

10 (12.66)

  

2

230 (86.79)

161 (86.56)

69 (87.34)

  

WeightGain, n(%)

   

χ²=5.45

0.02

1

142 (53.58)

91 (48.92)

51 (64.56)

  

2

123 (46.42)

95 (51.08)

28 (35.44)

  

AcademicQualifications, n(%)

   

χ²=0.15

0.696

1

129 (48.68)

92 (49.46)

37 (46.84)

  

2

136 (51.32)

94 (50.54)

42 (53.16)

  

Job, n(%)

   

χ²=0.35

0.555

1

87 (32.83)

59 (31.72)

28 (35.44)

  

2

178 (67.17)

127 (68.28)

51 (64.56)

  

Revenue, n(%)

   

χ²=0.08

0.778

1

188 (70.94)

131 (70.43)

57 (72.15)

  

2

77 (29.06)

55 (29.57)

22 (27.85)

  

Exercise, n(%)

   

χ²=0.27

0.603

1

39 (14.72)

26 (13.98)

13 (16.46)

  

2

226 (85.28)

160 (86.02)

66 (83.54)

  

Sleeplessness, n(%)

   

χ²=1.34

0.247

1

43 (16.23)

27 (14.52)

16 (20.25)

  

2

222 (83.77)

159 (85.48)

63 (79.75)

  

ProfessionalGuidance, n(%)

   

χ²=4.61

0.032

1

205 (77.65)

137 (74.05)

68 (86.08)

  

2

59 (22.35)

48 (25.95)

11 (13.92)

  

ConfidenceLevel, n(%)

   

χ²=0.01

0.933

1

68 (25.66)

48 (25.81)

20 (25.32)

  

2

197 (74.34)

138 (74.19)

59 (74.68)

  

SpousalRelationships, n(%)

   

χ²=0.27

0.601

1

101 (38.11)

69 (37.10)

32 (40.51)

  

2

164 (61.89)

117 (62.90)

47 (59.49)

  

ParentalRelations, n(%)

   

χ²=0.13

0.721

1

103 (38.87)

71 (38.17)

32 (40.51)

  

2

162 (61.13)

115 (61.83)

47 (59.49)

  
  1. χ²: Chi-square test;0=Internal test;1=Train