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Table 3 Inter-group and intra-group comparison of sleep quality scores of patients with thalassemia major

From: Effects of a positive thinking program on hope and sleep quality in Iranian patients with thalassemia: a randomized clinical trial

Time

Before intervention

Immediately after intervention

One month after the intervention

P value*

Variable

Group

Mean

SD

Mean

SD

Mean

SD

Hope

Experimental

21.1

4.4

26.7

5.8

26.2

2.0

 < 0.001

Control

21.1

5.1

20.4

3.7

20.3

4.5

0.042

P value**

0.986

 < 0.001***

 < 0.001***

 
  1. *Friedman Test
  2. **Mann–Whitney U Test
  3. *** Large Effect size
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BMC Psychology

ISSN: 2050-7283

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