Table 2 Symptom frequency statistics (top 20).

From: A supported decision-making model for idiopathic pulmonary fibrosis based on feature screening and optimized neural network

Common symptoms

Four diagnostic symptoms

Symptom

Frequency

Symptom

Frequency

Symptom

Frequency

Symptom

Frequency

Gasping

395

Dry mouth

174

White coating

534

Deep pulse

210

Cough with little phlegm

387

Rapid breathing

168

Thin coating

403

Dusky tongue

147

White phlegm

321

Poor sleep

144

Thready pulse

387

Light red tongue

139

Mild cough

310

Dyspnea 2

143

Yellow coating

307

Moderate pulse

126

Moderate cough

283

Dry and itchy throat

129

Red tongue

301

Thick coating

104

Shortness of breath

283

Cough with moderate phlegm

123

Wiry pulse

299

Floating pulse

97

Chest oppression

273

Soreness and weakness of waist and knees

109

Crimson tongue

290

Scanty coating

63

Fatigued spirit and lack of strength

270

Spontaneous sweating

86

Slippery pulse

268

Pale tongue

59

Sticky phlegm

212

Dry stool

83

Greasy tongue

245

Weak pulse

55

Poor appetite

200

Aggravated by movement

82

Rapid pulse

243

Enlarged tongue

51