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Table 4 Construct validity: known-groups comparisons

From: An international field study for the reliability and validity of the EORTC communication questionnaire EORTC QLQ-COMU26

 

n

Scale 1

Active

Scale 2

Relationship

Scale 3

Qualities

Scale 4

Skills

Scale 5

Emotions

Scale 6

Skills information

Preferences

(item 19)

Misunderstandings

(item 22)

Privacy

(item 25)

Satisfaction

(item 26)

QLQ-C30 emotional functioning

 Lowest (< 71)

230

76.5 (26.1)

78.9 (24.4)

84.8 (21.2)

86.2 (18.4)

79.1 (27.5)

73.4 (29.0)

70.2 (36.3)

77.3 (30.9)

77.9 (31.3)

81.6 (26.8)

 Highest (≥ 71)

264

83.1 (21.9)

86.9 (20.2)

90.8 (16.2)

90.8 (15.9)

85.7 (22.5)

81.6 (24.7)

79.9 (31.2)

86.2 (25.0)

85.2 (27.6)

89.6 (20.8)

p-value

 

0.005

 < 0.001

0.002

0.001

0.005

 < 0.001

0.002

0.003

0.002

 < 0.001

QLQ-COMU26 Satisfaction Item

 Not at all-quite a bit

152

56.9 (23.2)

60.6 (22.9)

68.8 (22.0)

71.9 (19.6)

56.4 (27.2)

49.6 (26.1)

46.1 (33.1)

56.2 (32.3)

54.4 (32.4)

0.0 (0.0)

 Very much

344

90.4 (16.1)

93.2 (13.3)

96.6 (8.1)

96.5 (7.6)

94.3 (12.0)

90.4 (15.6)

88.2 (25.4)

95.0 (13.0)

93.9 (18.0)

100.0 (0.0)

p-value

 

 < 0.001

 < 0.001

 < 0.001

 < 0.001

 < 0.001

 < 0.001

 < 0.001

 < 0.001

 < 0.001

 < 0.001

DEMOGRAPHIC

 Age

   < 70 years

344

79.9 (23.9)

83.3 (22.1)

88.7 (17.6)

89.7 (15.9)

82.9 (24.1)

77.2 (26.9)

75.0 (33.9)

83.4 (26.8)

82.4 (29.4)

86.0 (23.6)

   ≥ 70

153

80.8 (24.7)

83.3 (23.6)

86.7 (21.5)

86.6 (19.7)

82.2 (27.4)

79.5 (27.2)

76.6 (34.0)

79.7 (30.8)

80.7 (30.0)

86.0 (25.0)

p-value

 

0.433

0.832

0.626

0.366

0.777

0.257

0.495

0.424

0.506

0.723

Gender

 Male

220

83.5 (21.7)

85.9 (20.5)

90.2 (17.0)

90.1 (15.8)

86.8 (21.6)

83.5 (23.4)

81.1 (30.4)

85.5 (25.2)

84.1 (27.6)

89.1 (20.2)

 Female

268

77.9 (25.0)

81.7 (23.1)

86.8 (19.9)

87.8 (17.9)

79.5 (27.1)

73.8 (28.6)

70.9 (36.1)

80.0 (29.6)

80.5 (31.0)

83.6 (26.0)

p-value

 

0.010

0.029

0.036

0.142

0.001

 < 0.001

0.001

0.078

0.201

0.030

Education

 Less than compulsory school education

59

88.3 (16.4)

90.0 (16.1)

94.0 (11.4)

92.2 (13.0)

91.0 (19.8)

87.1 (22.8)

82.5 (31.8)

86.7 (27.0)

89.3 (21.8)

93.8 (14.5)

 Compulsory school education

172

85.1 (19.6)

88.0 (17.4)

91.6 (13.7)

91.2 (13.2)

87.5 (19.2)

81.4 (23.4)

81.9 (29.1)

87.5 (21.4)

85.3 (27.0)

89.3 (19.7)

 Post-compulsory education below university level

135

79.6 (25.4)

82.6 (23.6)

87.4 (21.0)

87.2 (19.6)

81.8 (26.1)

79.1 (25.5)

73.9 (34.7)

80.4 (28.9)

80.1 (30.1)

85.7 (24.6)

 University level

121

71.0 (27.0)

75.2 (26.0)

81.9 (22.9)

85.6 (19.8)

72.9 (29.9)

68.3 (31.2)

64.6 (38.4)

75.0 (33.8)

76.6 (34.1)

78.1 (29.1)

p-value

 

 < 0.001

 < 0.001

 < 0.001

0.027

 < 0.001

 < 0.001

 < 0.001

0.044

0.028

 < 0.001

CLINICAL SUBGROUPS

 Treatment intention

  Radical / curative

283

80.4 (25.5)

83.2 (23.5)

87.4 (20.0)

88.6 (18.1)

80.5 (26.8)

76.1 (28.4)

75.7 (34.5)

82.3 (28.2)

80.0 (31.5)

84.0 (25.4)

  Palliative

210

80.3 (22.0)

83.7 (21.3)

89.2 (17.4)

89.1 (16.0)

85.9 (22.5)

80.7 (24.8)

75.5 (33.5)

82.8 (27.6)

84.4 (26.5)

88.7 (21.8)

p-value

 

0.321

0.839

0.373

0.740

0.033

0.137

0.780

0.866

0.242

0.023

INFORMATION RELATED TO THE PROFESSIONAL ASSESSED

 Professional category

  Doctor

284

76.1 (25.7)

80.1 (24.1)

85.1 (21.0)

86.0 (18.9)

77.7 (27.8)

73.6 (28.7)

70.8 (35.6)

78.5 (31.7)

80.7 (29.3)

82.3 (26.4)

  Nurse

208

86.2 (20.4)

88.0 (19.3)

92.5 (14.7)

92.9 (13.6)

89.9 (19.0)

84.5 (23.0)

82.1 (30.8)

88.9 (19.9)

84.5 (29.5)

91.5 (19.0)

p-value

 

 < 0.001

 < 0.001

 < 0.001

 < 0.001

 < 0.001

 < 0.001

 < 0.001

0.009

0.023

 < 0.001

Having a companion at the visit

 No companion

72

75.3 (28.9)

80.0 (27.1)

83.8 (24.1)

86.0 (19.3)

78.6 (28.1)

72.6 (30.6)

70.5 (37.4)

82.7 (29.8)

81.2 (30.7)

81.9 (29.0)

 Sometimes

74

85.9 (20.6)

87.5 (19.8)

93.1 (14.7)

93.4 (14.5)

90.2 (19.7)

85.6 (23.9)

80.6 (32.0)

81.5 (28.4)

85.4 (27.8)

89.0 (22.3)

 Always

143

80.3 (22.5)

83.3 (20.6)

87.2 (17.6)

87.8 (16.2)

82.5 (23.9)

80.6 (22.2)

75.8 (32.3)

85.4 (21.5)

82.3 (27.1)

86.6 (21.4)

p-value

 

0.058

0.122

0.018

0.002

0.004

0.008

0.188

0.863

0.459

0.227

  1. Known-groups comparisons of the QLQ-COMU26 scores, using Mann–Whitney test or Kruskal–Wallis test
  2. Satisfaction item, divided into two groups: 1. Not at all/Quite a bit/A little/Quite a bit; 2. Very much
  3. Statistically significant differences in bold