. Author manuscript; available in PMC: 2019 Mar 18.

Published in final edited form as: Pediatr Transplant. 2015 Dec 16;20(2):307–315. doi: 10.1111/petr.12648

Table 3.

Differences in PMBS and AMBS barriers overall (N=239) and by age at study visit. PMBS-AMBS < 0 indicates higher barriers on AMBS.

	Total (N=239)		Ages 8–11 (N=33)		Ages 12–21 years (N=206)
PMBS-AMBS Difference	Mean ± SD	p-value	Mean ± SD	p-value	Mean ± SD	p-value
Medication scheduling^*	0.01±0.99	0.87	−0.35±0.87	*0.025*	0.07±1	0.32
Ingestion problems and side effects	−0.12±0.77	*0.018*	−0.28±0.66	*0.019*	−0.09±0.79	0.092
Medication and Disease frustration^*	0.06±1.2	0.45	−0.45±1.37	0.066	0.14±1.17	0.081

Each PMBS and AMBS item is rated on a 5-point scale from 1 (strongly disagree, low barrier) to 5 (strongly agree, high barrier). Factor scores are presented as the mean of the factor item ratings.

Data not available for all subjects. Missing values: Medication scheduling =2, Medication and disease frustration=1.

p-values are from paired t-tests of the hypotheses that there is no difference between PMBS and AMBS factor scores within each patient.