Yazdani 2010.
| Methods | RCT, Iran | |
| Participants | 76 nursing students "The study population included all male and female nursing students who were studying in Isfahan Nursing and Midwifery university in 2010‐2011, in the second and third years (third, fourth, fifth and sixth semesters). 72 [sic] students were randomly assigned to two groups using the list of students studying in the second and third year in 2010‐2011 and based on the odd and even numbers." (p. 210) "The groups were heterogeneous in terms of gender..." (p. 210) |
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| Interventions | 1) Experimental: Stress management training (n = 38). "[F]irst group (n=38) trained stress management training program (8 two hours sessions, twice a week). And second group (n = 38) did not received [sic] training." (p. 210) The stress management program consisted of: information about stress, gradual muscle relaxation and its implementation with mental imagery, consequences and physical symptoms of stress, relaxation and imagery and training and diaphragm breathing practices, linking thoughts and emotions and familiarity with cognitive errors, discussion about relaxation exercises and replacement of logical thoughts and personal stress management program. 2) Control: no intervention (n = 38) |
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| Outcomes | DASS‐42: Depression, Anxiety and Stress Scale | |
| Notes | ||
| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Random sequence generation (selection bias) | High risk | "...students were randomly assigned to two groups using the list of students studying in the second and third year in 2010‐2011 and based on the odd and even numbers." (p. 210) |
| Allocation concealment (selection bias) | Unclear risk | Not reported if group allocation was concealed |
| Blinding (performance bias and detection bias) All outcomes | High risk | Participants could not be blinded regarding group allocation. Also as outcome measurement was by self report, there was no blinding |
| Incomplete outcome data (attrition bias) All outcomes | Unclear risk | It is difficult to tell if some participants were lost to follow‐up or not as the authors give three separate numbers for the amount of participants. "This study was a parallel ‐group randomized quasi‐experimental trial...on 68 Bs nursing students.", " 72 students were randomly assigned..." and "Finally seventy‐six subjects elected among them." (p. 210) |
| Selective reporting (reporting bias) | Low risk | The study had only one outcome and its results are all reported |
| Other bias | Unclear risk | We did not find any indications of other sources of bias |