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Table 4.

Comparison of current and revised evaluations

Evaluation item (score) Average score 100-point scaled score for each item t-value
Current Revision Current Revision Current
mean (SD)
Revision
mean (SD)
Accuracy of calibration (12) Accuracy of calibration (10) 9.6 8.9 80.0 (31.6) 89.4 (18.1) ‒3.94***
Accuracy of surveys and information entry (20) Accuracy of surveys and information entry (25) 11.5 15.8 57.3 (30.4) 63.4 (21.9) ‒1.77
Number of measurements (12)a) Accuracy of measurements

6.2a)

9.4b)

10.2c)

7.6d)

5.8e)

Total 39.2

16.9f)

15.7g)

5.4h)

5.2i)

Total 43.2

51.7a)

67.1b)

72.9c)

54.3d)

41.4e)

Total 57.7 (19.3)

68.0f)

63.2g)

69.3h)

69.3i)

Total 66.4 (14.6)

‒3.98***
Acceptability FEV1 (25)f)
Good start (14)b) FVC (25)g)
Appropriateness of result selection
Free from artifacts (14)c)
Satisfactory exhalation (14)d) FEV1 (7.5)h)
Repeatability (14)e) FVC (7.5)i)
Total 100 Total 100 60.3 67.9 60.3 (17.6) 67.9 (11.6) ‒4.10***

***P<0.001: P-values were calculated by paired t-test.

a)~i)Each mark corresponds to an item and a score.

Abbreviations: FVC, forced vital capacity; FEV1, forced expiratory volume in one second.

Korean J Clin Lab Sci 2023;55:276-83 https://doi.org/10.15324/kjcls.2023.55.4.276
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