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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.