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Table 3 Fit indexes of the different models of the CFA (N = 192)

From: Development and validation of the Cystic Fibrosis Decisional Balance for Physical Activity scale (CF-DB-PA)

 

χ2 (df)

p

RMSEA

CI of RMSEA 90%

TLI

CFI

Δχ2(df)

Δp

Model a

955.89 (223)

 < .001

.13

.12–.14

.52

.57

  

Model b

715.44 (222)

 < .001

.11

.10–.12

.67

.71

240.45 (1)

 < .001

Model c

544.41 (227)

 < .001

.09

.08–.10

.80

.82

171.03 (5)

 < .001

Model d

362.33 (194)

 < .001

.07

.06–.08

.87

.90

182.08 (33)

 < .001

  1. Model a: one-dimensional; Model b: first-order two-factor correlated; Model c: second-order hierarchical order; Model d: confirmatory bi-factor. χ2: Chi2; df: degrees of freedom; RMSEA: root mean square error of approximation; 90% CI: confidence interval of RMSEA 90, CFI: comparative fit index; TLI: Tucker-Lewis index of adjustment
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BMC Pulmonary Medicine

ISSN: 1471-2466

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