Results
anxiety
As shown in Table 1, out of 52 children participating in this study, 27 (51.9%) were boys and 25 (48.1%) were girls. According to the Chi-square test, no significant difference was observed between the control and intervention groups in terms of their mean age. Also, based on the test, it was found that there is no statistically significant difference between the two groups of control and intervention in terms of gender (Table The changes in mean systolic blood pressure measured in the control group were not significant (P = 0.555), but in the test group, the trend of changes in systolic blood pressure was significantly reduced and affected by music (P = 0.000). Based on statistical analysis by repeated-measures analysis of variance, heart rate changes during three consecutive days were not affected in the control group (P = 0.756), while in the test group, the heart was significantly decreased for three consecutive days under the influence of music (P = 0.001). The results show that the number of breaths in both groups before the intervention was equal (P = 0.765). this parameter decreased at other times including the first day after the intervention and the second and third days before and after the intervention in children hospitalized compared to the control group (Table  The results of the statistical analysis of body temperature show that the difference between the mean body temperature between the test and control groups at any time before and after the intervention and every three days was not significant (Table 
Demographic characteristics of hospitalized children participating in the studyChi-square and t-tests were used to analyze gender and age variables, respectively
The effect of non-verbal music on the level of anxiety of hospitalized children1 t-test was used2 Analysis of variance with repeated measures
The effect of non-verbal music on vital signs of hospitalized children1 t-test was used2 Analysis of variance with repeated measures