Research Article
Development of the Short-Form Yin Deficiency Scale Using Three Item Reduction Approaches
Table 4
Item difficulty and fitting levels of the short-form Yin Deficiency Scale using Rasch analysis.
| | Item (no.) | Raw score | Model measure | Infit MnSq | Outfit MnSq |
| First analysis | Night cough (Q1) | 341 | 0.79 | 0.94 | 0.99 | Afternoon cough (Q3) | 318 | 0.97 | 0.72 | 0.67 | Afternoon flush (Q5) | 383 | 0.49 | 0.83 | 0.81 | Dry mouth (Q6) | 486 | −0.16 | 1.04 | 1.02 | Weakness of the lower limbs (Q8) | 473 | −0.08 | 0.78 | 0.78 | Dull pain of the ankle or knee (Q9) | 494 | −0.22 | 1.06 | 1.06 | Low back pain (Q10) | 566 | −0.70 | 0.97 | 0.97 | Wake due to night urination (Q11) | 486 | −0.16 | 1.40 | 1.46 | Frequent urination (Q12) | 530 | −0.45 | 1.13 | 1.18 | Fatigue (Q17) | 650 | −1.39 | 1.16 | 1.18 | Dry and cracked heel (Q18) | 448 | 0.08 | 1.09 | 1.12 | Night itch (Q19) | 403 | 0.36 | 0.94 | 0.96 | Dull pain of the heel (Q20) | 399 | 0.39 | 0.85 | 0.85 | Tinnitus (Q24) | 438 | 0.14 | 1.32 | 1.32 | Hair loss (Q25) | 445 | 0.09 | 1.02 | 1.07 | Rough skin (Q26) | 484 | −0.15 | 0.83 | 0.87 |
| The second analysis | Night cough (Q1) | 341 | 0.86 | 1.02 | 1.06 | Afternoon flush (Q5) | 383 | 0.56 | 0.86 | 0.83 | Dry mouth (Q6) | 486 | −0.11 | 1.06 | 1.05 | Weakness of the lower limbs (Q8) | 473 | −0.03 | 0.75 | 0.75 | Dull pain of the ankle or knee (Q9) | 494 | −0.16 | 1.02 | 1.04 | Low back pain (Q10) | 566 | −0.65 | 0.97 | 0.95 | Frequent urination (Q12) | 530 | −0.40 | 1.19 | 1.24 | Fatigue (Q17) | 650 | −1.35 | 1.15 | 1.16 | Dry and cracked heel (Q18) | 448 | 0.13 | 1.10 | 1.13 | Night itch (Q19) | 403 | 0.43 | 0.96 | 0.99 | Dull pain of the heel (Q20) | 399 | 0.45 | 0.83 | 0.84 | Tinnitus (Q24) | 438 | 0.20 | 1.31 | 1.29 | Hair loss (Q25) | 445 | 0.15 | 1.03 | 1.12 | Rough skin (Q26) | 484 | −0.10 | 0.81 | 0.85 |
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MnSq, mean square. Bold letters indicate infit or outfit MnSq under 0.70 or over 1.40.
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