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Table 8 Parametersa of the final longitudinal model (n = 6336)

From: A life-course and time perspective on the construct validity of psychological distress in women and men. Measurement invariance of the K6 across gender

 

Factor loadingsb

First threshold b,c

Longitudinal stabilityd

 

Cycle 1

Cycles

4 and 7

Cycle 1

Cycle 4

Cycle 7

6 years

12 years

Item A

So sad ...

0.78

0.78

0.50

M 0.82

W 0.77

0.82

0.05

0.04

Item B

Nervous

0.56

0.67

-0.19

M 0.32

W 0.29

0.32

0.20

0.23

Item C

Restless ...

M 0.48

W 0.61

0.61

M -0.00

W 0.16

0.42

M 0.42

W 0.47

0.20

0.15

Item D

Hopeless

0.92

0.92

1.24

M 1.24

W 1.51

M 1.24

W 1.38

0.05

0.04

Item E

Worthless

0.87

0.87

1.59

1.59

1.59

0.05

0.04

Item F

... effort

0.63

0.77

0.17

0.82

M 0.70

W 0.80

0.05

0.04

  1. a All the scale factors equal 1.00 in women and men; thus they are not presented in this Table.
  2. b A single value indicates that the parameter is invariant across gender. When a gender difference is observed, M identifies the value for men and W the value for Women.
  3. c Only data pertaining to the first threshold (i.e., between "none of the time" and "a little of the time") are presented.
  4. d Correlations between the residuals of the items over time.
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BMC Medical Research Methodology

ISSN: 1471-2288

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