Statistical analysis
Data were analyzed using the Statistical Package for the Social Sciences (SPSS Inc., IBM, Chicago, IL, USA) for Mac version 25.0. The level of confidence was set at 95%, and a p value of < 0.05 was considered to be statistically significant. Mean VAS scores were used to rank the rate of acceptance of each BGT. Friedman’s two-way analysis of variance was used to analyze the difference in VAS scores among the advanced BGTs. The Mann–Whitney U test was conducted to compare VAS scores among the advanced BGTs between the “Experience group” and the “No experience group.” Open-ended questions were analyzed using quantitative content analysis. All open-ended answers were coded and categorized by two investigators (AM and NS) as positive and negative feedback. Any disagreement between two investigators was resolved through a decision by the third investigator (AS). Descriptive statistics were used to analyze parents’ opinions toward each advanced BGT.