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Table 1 Suitability indices of construct validity and external validity according to the attention status

From: What is the relevance of quality of life assessment for patients with attention impairment?

 

Attention_WMS

PASAT

Construct validity

NI 75

I 39

NI 32

I 73

% of identified factors

88,9

88,9

88,9

100

% of well-projected items

57,1

80,6

83,9

100

% of dimensions with IIC non exceeded 0,2 from ref

44,4

77,8

77,8

44,4

% of dimensions with IDV non exceeded 0,2 from ref

33,3

22,2

0

44,4

% of dimensions with IDV < IIC

88,9

77,8

77,8

66,7

% of dimensions with Cronbach’s alpha coefficients > = 0,7 or > = ref

77,8

66,7

77,8

77,8

% of dimensions with INFIT ranged [0,7-1,3]

83,3

83,3

66,7

44,4

% of dimensions with MV < 10% from ref

100

88,9

88,9

88,9

% of dimensions with Floor < 10% from ref

77,8

33,3

77,8

55,6

% of dimensions with Ceiling < 10% from ref

66,7

77,8

66,7

66,7

Total

71,8

69,7

70,6

68,9

External validity

NI 75

I 39

NI 32

I 73

SF36: % of dimensions meeting three conditions*

88,9

88,9

55,6

88,9

Age: % of dimensions with correlation coefficient < 0,40

100

100

100

100

EDSS: % of dimensions meeting two conditions**

100

88,9

88,9

88,9

MS duration: % of dimensions with correlation coefficient < 0,40

100

100

100

100

Gender: % of dimensions with ES < 0,2 from ref

88,9

100

100

100

Educational level: % of dimensions with ES < 0,2 from ref

55,6

44,4

66,7

44,4

Marital status: % of dimensions with ES < 0,2 from ref

100

88,9

77,8

100

Occupational status: % of dimensions with ES < 0,2 from ref

55,6

55,6

55,6

44,4

Total

86,1

83,3

80,6

83,3

  1. * MusiQoL and SF36: the three conditions were: i) correlation coefficient between ADL and PF or RP or V higher than 0,50 and stronger than the other correlations; ii) correlation coefficient between PWB and MH higher than 0,50 and stronger than the other correlations; iii) all other correlation coefficients inferior to 0,40.
  2. ** MusiQoL and EDSS: the two conditions were: i) correlation coefficient between ADL and EDSS > 0,4 and stronger than the other correlations; ii) all other correlation coefficients inferior to 0,40, The score was 100% when all the dimensions met the condition.
  3. NI non impaired, I impaired, Ref reference population.