Table 3.

Significant associations between system maturity and user familiarity with users’ assessment of system function and usage.

Domain	Question	OR (95% CI) predicting a favorable response*
Effect of system maturity (2016 System B versus 2011 System A [reference])
Function	CHICA has uncovered issues with patients that I might not otherwise have found out about	5.18 (1.63–18.78)
Function	CHICA often makes mistakes	7.58 (2.43–26.34)
Function	I often disagree with the advice CHICA gives	4.24 (1.31–15.85)
Effect of user familiarity (2016 System A versus 2016 System B [reference])
Function	CHICA makes documentation easier	6.29 (1.9–23.87)
Function	CHICA makes lots of errors	3.44 (1.04–11.68)
Function	The handouts CHICA produces are useful	8.17 (1.73–46.68)
Usage	Technical support for CHICA is very good	15.89 (3.81–85.34)
Usage	I would rather not use CHICA	9.71 (3.16–33.54)

^*Models adjusted for clinic role, part-time status and CHICA use frequency