Table 4.

SCAS scores over time: subgroup

Test	Intervention group	Control group	Between group differences for baseline change	p
High-anxiety	n = 19	n = 8
Pre	51.74 (46.65–56.82)	45.88 (38.04–53.72)
Post	45.80 (40.65–50.95)	46.88 (39.04–54.72)	− 5.89 (− 13.71 to 1.94)	.13
Follow-up	47.80 (42.47–53.14)	46.75 (38.46–55.05)	− 4.70 (− 13.02 to 3.62)	.26
Low-anxiety	n = 130	n = 81
Pre	16.76 (15.05–18.47)	13.58 (11.42–15.74)
Post	15.28 (13.57–16.98)	12.56 (10.39–14.73)	.03 (− 1.73 to 1.78)	.97
Follow-up	14.67 (12.95–16.40)	11.81 (9.64–13.98)	.09 (− 2.05 to 2.22)	.94

High-anxiety subgroup (SCAS scores ≥ 35), Low-anxiety (SCAS scores < 35) subgroup analysis: estimated mean score on the SCAS at each time point and estimated difference in change between the experimental groups according to a mixed effects model for repeated measures. Scores are presented in the form M (95% CI). SCAS Spence Children’s Anxiety Scale