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Table 3 Analysis of variability between training set and external validation set

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

Variables

Total (n = 299)

0 (n = 113)

1 (n = 186)

Statistic

P

ImpactOnEating, n(%)

   

χ²=0.02

0.875

1

208 (69.57)

78 (69.03)

130 (69.89)

  

2

91 (30.43)

35 (30.97)

56 (30.11)

  

FamilyHistory, n(%)

   

χ²=0.15

0.699

1

42 (14.05)

17 (15.04)

25 (13.44)

  

2

257 (85.95)

96 (84.96)

161 (86.56)

  

WeightGain, n(%)

   

χ²=0.87

0.35

1

140 (46.82)

49 (43.36)

91 (48.92)

  

2

159 (53.18)

64 (56.64)

95 (51.08)

  

AcademicQualifications, n(%)

   

χ²=0.77

0.381

1

142 (47.49)

50 (44.25)

92 (49.46)

  

2

157 (52.51)

63 (55.75)

94 (50.54)

  

Job, n(%)

   

χ²=3.54

0.06

1

107 (35.79)

48 (42.48)

59 (31.72)

  

2

192 (64.21)

65 (57.52)

127 (68.28)

  

Revenue, n(%)

   

χ²=1.45

0.228

1

203 (67.89)

72 (63.72)

131 (70.43)

  

2

96 (32.11)

41 (36.28)

55 (29.57)

  

Exercise, n(%)

   

χ²=0.06

0.799

1

43 (14.38)

17 (15.04)

26 (13.98)

  

2

256 (85.62)

96 (84.96)

160 (86.02)

  

Sleeplessness, n(%)

   

χ²=4.18

0.041

1

54 (18.06)

27 (23.89)

27 (14.52)

  

2

245 (81.94)

86 (76.11)

159 (85.48)

  

ProfessionalGuidance, n(%)

   

χ²=0.20

0.654

1

218 (73.15)

81 (71.68)

137 (74.05)

  

2

80 (26.85)

32 (28.32)

48 (25.95)

  

ConfidenceLevel, n(%)

   

χ²=0.23

0.634

1

80 (26.76)

32 (28.32)

48 (25.81)

  

2

219 (73.24)

81 (71.68)

138 (74.19)

  

SpousalRelationships, n(%)

   

χ²=0.85

0.355

1

117 (39.13)

48 (42.48)

69 (37.10)

  

2

182 (60.87)

65 (57.52)

117 (62.90)

  

ParentalRelations, n(%)

   

χ²=0.79

0.375

1

120 (40.13)

49 (43.36)

71 (38.17)

  

2

179 (59.87)

64 (56.64)

115 (61.83)

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