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Table 1 Code comparative table of various insomnia related symptoms

From: Research of insomnia on traditional Chinese medicine diagnosis and treatment based on machine learning

Item Content Code Item Content Code Item Content Code
Tongue
color
Normal 0 Insomnia course  ≤ 3 months 1 Sleep duration Normal 0
Pale 1 3 months-1 year 2 Pernoctation 1
Red 2 1–3 years 3 0–1 h 2
Dark 3 3–5 years 4 1–2 h 3
Others 4  > 5 years 5 2–3 h 4
Cold and heat Normal 0 Asthenia and sthenia Normal 0 3–4 h 5
Cold 1 Asthenia 1 4–5 h 6
Heat 2 Sthenia 2 5–6 h 7
Cold and heat complex 3 Asthenia and sthenia Complex 3 6–7 h 8
Others 4 Others 4  > 7 h 9
Five zang-organs Normal 0 Pathogenic factors Normal 0 Taking medicine to sleep A
Heart 1 Phlegm 1 Emotional
status
Normal 0
Liver 2 Fire 2 Anxious 1
Spleen 3 Blood stasis 3 Fear 2
Lung 4 Asthenia 4 Nervous 3
Kidney 5 Others 5 Restlessness 4
Tongue proper Normal 0 Sleeping
status
Normal 0 Timidity 5
Enlarged tongue 1 Difficult to fall asleep 1 Irritability 6
Thin tongue 2 Dysphylaxia 2 Depressed 7
Teeth print on tongue 3 Festless sleep 3 Flusteredness 8
Cleft tongue 4 Hard to fall asleep again after waking up 4 Others 9
The vessels of sublingual purple 5 Dreaminess 5 Concomitant symptoms Normal 0
The tongue with ecchymosis
  Others 6 Others 6 Headache 1
Six fu-organs Normal 0 Others Normal 0 Dizziness 2
Stomach 1 Sallow complexion 1 Lethargic 3
Gallbladder 2 Flushed cheeks 2 Aversion to cold 4
Large intestine 3 Redness of the eyes 3 Aversion to heat 5
Small intestine 4 Dark lip 4 Aversion to cold or heat Irregular 6
Bladder 5 Halitosis 5 Tidal fever 7
Sanjiao 6 Eyes bright 6 Night sweat 8
   Others 7 Snoring 9
Pulse
conditions
Normal 0 The tongue coating Normal 0 Nocturia A
Thin 1 Yellow 1 Fatigue B
Wiry 2 Thin 2 Dry mouth C
Slippery 3 Slimy 3 Bitter taste in
the mouth
D
Rapid 4 White 4 Abnormal stool and urine E
Deep 5 Scanty 5 Others F
Floating 6 Thick 6    
Others 7 Dye 7    
   Others 8