Table 6 Top 10 important options by the improved TF-IDF.

From: A comprehensive psychological tendency prediction model for pregnant women based on questionnaires

Option description

Depression

Normal

Imp-TF-IDF

IG

1. Feel pressure now

138

646

0.3195

0.0044

2. Children will influence the relationship with lover

83

322

0.2537

0.0032

3. Staff

102

578

0.2483

0.0022

4. Occasionally passive smoking

124

937

0.2380

0.0014

5. Own wishes (the reason for wanting a baby)

82

494

0.2133

0.0015

6. Worried about economic pressure

92

707

0.2042

0.0009

7. Cesarean section

73

431

0.2005

0.0014

8. Drinking occasionally

72

443

0.1956

0.0012

9. Passive smoking > 3 hours/day

41

79

0.1864

0.0029

10. General (relationship with colleagues)

44

115

0.1826

0.0025

Average value of all options

  

0.1005

0.0005