a decreasing trendp=0.041
When stratified analysis was carried out in the group aged 8–10 years old, the children in 2015–2017 reported significantly lower summed scores on items belonging to factor III compared with peers in 2008–2011, while no significant differences were seen in items for the other three factors, indicating a decreasing trend in anxiety levels over time for the ‘less invasive procedures’ items (factor III) ( table 5 , p=0.041).