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Table 5 One-dimensional 2 parameter logistic graded response model with equal discrimination parameters across items

From: Indirect calibration between clinical observers - application to the New York Heart Association functional classification system

 

Threshold

11

t1 (se)

Threshold

22

t2 (se)

Item

Discrimination3

Β (se)

"Dyspnea"

0.688 (0.106)

---

2.268 (0.176)

"Distance"

-0.349 (0.104)

0.278 (0.094)

2.268 (0.176)

"Stairs"

-0.493 (0.102)

0.459 (0.390)

2.268 (0.176)

"Effort"

-0.316 (0.099)

0.865 (0.123)

2.268 (0.176)

Observer 1

-0.549 (0.283)

1.503 (0.287)

2.268 (0.176)

Observer 2

-0.099 (0.168)

1.692 (0.631)

2.268 (0.176)

Observer 3

---

---

---

Observer 4

-1.920 (0.253)

1.420 (1.237)

2.268 (0.176)

Observer 5

0.331 (0.312)

1.671 (0.309)

2.268 (0.176)

Observer 6

-1.211 (0.449)

2.178 (0.728)

2.268 (0.176)

Observer 7

0.430 (0.269)

1.804 (3.418)

2.268 (0.176)

Observer 8

0.339 (0.247)

2.263 (0.305)

2.268 (0.176)

  1. 1Threshold 1 - level of ability above which 50% of subjects were NYHA class II-III
  2. 2Threshold 2 - level of ability above which 50% of subjects were NYHA class III
  3. 3Item discrimination - represents the slope of the item characteristic curves at the value of the threshold and indicates the extent to which the item is related to the ability
  4. se: standard error.
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BMC Research Notes

ISSN: 1756-0500

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