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Table 4 Median values of time intervals of studies with non-adequate (<0.70) and adequate (≥0.70) test-retest values

From: A critical analysis of test-retest reliability in instrument validation studies of cancer patients under palliative care: a systematic review

Evaluated domains

Number of studies

Time interval (hours) Median (Q1-Q3)

p-value*

Test-retest < 0.70

Test-retest ≥ 0.70

Global HRQoL

19

168 (36–168)

60 (36.75-206)

0.565

Emotional

8

1681

168 (48–204)

-

Physical

5

1681

108 (30–195)

-

Social

6

1862

108 (48–195)

-

Functioning

3

-

1683

-

Existential

6

1201

168 (48–232)

-

Global symptoms

5

25.752

483

-

Pain

18

120 (42–168)

48 (3–168)

0.262

Nausea

12

108 (33–168)

24 (3–72)

0.146

Fatigue

11

48 (24–168)

3 (2.5-120)

0.184

Anxiety

10

72 (36–168)

48 (8.25-144)

0.443

Depression

9

102 (27–168)

60 (18.75-96)

0.587

  1. HRQoL health-related quality of life.
  2. *Mann–Whitney test.
  3. 1Only one study. 2Only two studies. 3Only three studies.