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Table 5 The Rasch analysis of the LCSHB-C

From: Adaptation and validation of the Chinese version of the lung cancer screening health belief scales

Subscale Item Item difficulty a Infit MNSQ Outfit MNSQ DIF contrast by genderb
Perceived barriers to lung cancer screening B1 0.10 1.26 1.43 0.82
B2 0.00 0.90 0.90 1.72
B3 0.02 0.97 1.04 1.71
B4 -0.17 1.17 1.25 1.35
B5 -0.01 0.95 0.94 0.06
B6 -0.03 1.03 1.04 0.55
B7 -0.02 1.00 1.01 0.28
B8 -0.01 0.94 1.00 0.01
B9 -0.01 0.91 0.92 0.89
B10 -0.06 0.93 0.96 1.69
B11 -0.14 0.85 0.87 0.03
B12 0.01 1.17 1.33 2.15
B13 0.07 0.88 0.87 0.42
B14 0.04 0.93 0.92 0.04
B15 0.01 0.81 0.81 2.1
B16 0.01 1.02 1.06 1.19
B17 0.21 1.26 1.40 1.77
Perceived benefits of lung cancer screening Be1 -0.17 1.12 1.04 0.57
Be2 0.02 0.94 0.88 0.52
Be3 0.16 1.14 1.11 2.38
Be4 0.04 0.92 0.83 0.39
Be5 -0.08 0.93 0.83 0.18
Be6 0.03 0.92 0.83 0.01
Perceived risk of lung cancer screening R1 -0.68 1.38 1.38 0.30
R2 0.14 0.66 0.63 0.42
R3 0.54 0.91 0.89 0.01
Self-efficacy for lung cancer screening S1 0.32 1.21 1.26 1.66
S2 0.10 0.89 0.89 0.00
S3 -0.11 1.10 1.12 0.15
S4 -0.14 0.90 0.88 0.59
S5 -0.12 0.92 0.90 0.75
S6 0.05 0.87 0.86 1.87
S7 -0.11 0.96 0.93 0.40
S8 -0.03 1.06 1.02 0.41
S9 0.05 1.06 1.04 0.37
  1. MNSQ mean square
  2. aMeasured in logit; positive item logit indicates that the item requires a lower visual ability than the mean of the items and is an easier item; a negative item logit indicates that the item requires a higher visual ability than the mean of the items and is a more difficult item
  3. bmale compared with female