Table 3 Confirmatory Factor Analysis for all the models tested
From: Perceived Vulnerability to Disease Questionnaire: psychometric validation with a Portuguese sample
Model 1 | Model 2.1 Original | Model 2.2 Spain1 | Model 2.3 Portugal | Model 3.1 Spain2 | Model 3.2 Portugal | Model 4.1 Spain2 | Model 4.2 Portugal | |
|---|---|---|---|---|---|---|---|---|
One Factor PVD (all items) | Two Factors PI & GA (all items) | Two Factors PI & GA (w/o reverse items) | Two Factors PI & GA (w/o items Q2, Q5, Q6, Q9 and Q13) | One Factor PI (all items) | One Factor PI (w/o items Q2, Q5 and Q6) | One Factor GA (all items) | One Factor GA (w/o items Q9 and Q13) | |
χ2; p(df) | 237.68; p < .001(90) | 147.43; p < .001(89) | 34.57; p = .12(26) | 46.68; p = .07(34) | 35.97; p = .001(14) | 11.57; p < .01(2) | 17.51; p = .62(20) | 5.375; p = .80(9) |
CFI | .50 | .80 | .95 | .93 | .84 | .88 | 1.00 | 1.00 |
TLI | .42 | .77 | .93 | .91 | .76 | .63 | 1.02 | 1.04 |
RMSEA (90%CI) | .11 (.09, .13) | .07 (.05, .09) | .05 (0, .09) | .05 (0, .09) | .11 (.07, .15) | .19 (.09, .30) | 0 (0, .06) | 0 (0, .06) |
SRMR | .12 | .09 | .06 | .07 | .08 | .07 | .04 | .03 |
Loadings range | (.13 to .62) | PI (.28 to .75) GA (.42 to .70) | PI (.47 to .83) GA (.41 to .69) | PI (.63 to .75) GA (.52 to .70) | (.41 to .78) | (.61 to .79) | (.40 to .69) | (.55 to .67) |
Items below 0.5 | Q3, Q5, Q6, Q8, Q9, Q12, Q13, Q14 | PI – Q5, Q6 GA – Q3, Q9 | PI – Q6 GA – Q9 | Q5 | Q9, Q13 |