Table 1 The psychometric analytical process of the Wijma Delivery Expectancy/Experience Questionnaire A (W-DEQ A)
Description | Method | Result |
|---|---|---|
Step 1: Translation process and content validity of the W-DEQ A scale | ||
 1. Forward and back translation | Followed recommended guidelines by Wild et al. [28] | The consensus was reached on the final version |
 2. Content validity | Expert review (n = 4) | Mean CVI for the total scale = 0.95 |
Step 2: Psychometric analysis of the W-DEQ A scale | ||
 Validity | ||
  1. Construct validity | EFA (factor loading ≥0.35) | a. Seven items were removed during the EFA as they had poor factor loadings and did not represent their factors. |
CFA (χ2/df ≤ 3.0, RMSEA ≤0.08, CFI > 0.95, TLI > 0.95, and AIC: the smaller, the better) | b. Three items were removed because of poor model fit during the CFA. | |
|  | c. The final factor model of the W-DEQ A scale comprised 23 items, and three factors were confirmed with the following model fit indices: χ2/df = 2.52, p < 0.001; RMSEA = 0.07; CFI = 0.75; TLI = 0.72; AIC = 669. | |
  2. Convergent validity | Pearson’s correlation | a. Significant correlation between the W-DEQ A and scales of depressive symptoms (r = 0.23, p < 0.001), and QOL (r = − 0.17 ~- 0.26, p < 0.001 ~ 0.05). |
 Reliability | ||
  1. Internal consistency | CFA Cronbach’s α | a. Total scale: 0.84; subscales: factor 1: 0.78, factor 2: 0.65, factor 3: 0.73 |