THE EFFECT OF VIRTUAL REALITY ON PAIN EXPERIENCED BY SCHOOL-AGE CHILDREN DURING VENIPUNCTURE: RANDOMIZED CONTROLLED STUDY

The research was designed as a randomized controlled experimental study. The population of the study consisted of all 7-12 year-old children who came to a vaccination room of an university hospital's pediatric outpatient clinic .It is stated in the literature that the sample size should be determined as minimum 41 in both experimental and control groups in the experimental studies.

In the study, randomization Urn method was carried out. Urn method consists of two parameters (α and β). These parameters are matched with two different colored balls (red and white). One of the balls was randomly selected and if this ball was white, the individual was assigned to α group; if it was red, then participant was assigned to β group. This process was repeated for each assignment. In the study, white ball was determined as control group; whereas, red ball was determined as experimental group. In the case of a child meeting the sampling criteria, these balls that the researcher had previously prepared were placed in a black bag and any nurse working in the pediatrics outpatient clinic at that time was asked to draw a ball from the bag. The children were assigned to experimental or control group based on color of the selected ball so that they were randomly distributed to two groups. A total of 106 children including 54 children in the experimental group and 52 children in the control group were included in the sample group by taking possible case losses into account. Since 2 children in the experimental group did not want to wear the virtual reality headset during the procedure, they were excluded from the sample. 2 children in the control group were excluded from the sample because venipuncture procedure did not take place at once. Thus, the sample group consisted of 102 children in total including 52 children in the experimental group and 50 children in the control group. The study followed the CONSORT guideline for reporting randomized controlled trials. The data collection questionnaries included a Child and Parent Information Form, State-Trait Anxiety Inventory for Children, and Faces Pain Scale-Revised (FPS-R).