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. 2013 Dec 28;2013(12):CD006577. doi: 10.1002/14651858.CD006577.pub3

Sendelbach 2006.

Study characteristics
Methods RCT
2‐arm parallel group design
Participants Adults following non‐emergent CAB and/or valve replacement surgery
Total N randomized: not reported
N randomized to music group: unclear
N randomized to control group: unclear
N analyzed in music group: 50
N analyzed in control group: 36
Mean age: 63.5 years
Sex: 26 (30%) women, 60 (70%) men
Ethnicity: not reported
Setting: inpatient
Country: USA
Interventions Two study groups:
1. Music group: listening to self‐selected sedative music through earphones
2. Control group: standard care
Music selections provided: (a) easy listening, (b) classical, (c) jazz
Number of sessions: 2 sessions/day for POD 1 through 3
Length of session: 20 mins
Categorized as music medicine
Outcomes Anxiety (STAI): 6 measurement points. Due to high number of missing values, only posttests POD1 am, POD1 pm and POD2 am were used in research report
HR and SBP: 6 measurement points. Due to high number of missing values, only posttest POD1 am, POD1 pm and POD2 am were used in research report
Pain (NRS): 6 measurement points. Due to high number of missing values, only posttests POD1 am, POD1 pm and POD2 am were used in research report
Notes N is highly variable due to high number of missing data
Risk of bias
Bias Authors' judgement Support for judgement
Random sequence generation (selection bias) Low risk Flip of coin
Allocation concealment (selection bias) Low risk Flip of coin prevented prior knowledge of randomization sequence
Blinding of participants and personnel (performance bias)
All outcomes High risk Blinding of participants was not possible. Personnel were not blinded.
Blinding of outcome assessment (detection bias)
Subjective outcomes High risk Self report measures were used for subjective outcomes
Blinding of outcome assessment (detection bias)
Objective outcomes High risk Outcome assessors were not blinded
Incomplete outcome data (attrition bias)
All outcomes Unclear risk Not reported
Selective reporting (reporting bias) Unclear risk Not sufficient information available to make judgment
Other bias Low risk Supported by a grant from the Allina Foundation Nursing Research Trust Fund.