Table 2.

Adjusted Utilization Measures by Clinician Messaging Group, Regression Estimates and Marginal Effects*

	Regression estimates		Marginal effects
	Est	95%CI	Est	95%CI
Medical advice messages
Low	Ref		262.2	173.5–350.9
Moderate	266.8	251.9–281.8	529.1	440.9–617.3
High	585.3	566.6–604.9	847.2	758.5–936.2
Outside hours worked
Low	Ref		51.7	42.6–60.8
Moderate	3.8	− 1.4 to 9.0	55.5	47.0–64.0
High	5.2	− 1.3 to 11.7	56.9	47.9–66.0
Outpatient visits
Low	Ref		449.7	336.1–563.4
Moderate	72.0	50.3–93.7	521.7	408.9–634.6
High	105.8	78.7–132.9	555.6	442.0–669.1
Telephone encounters
Low	Ref		719.4	651.3–787.4
Moderate	− 32.5	− 79.4 to 14.4	686.9	625.4–748.4
High	42.4	− 16.3 to 101.1	761.8	695.4–829.1
Refill requests
Low	Ref	118.2–195.0	642.3	581.2–703.4
Moderate	156.6	295.6–391.7	798.9	742.7–855.1
High	343.7	134.5–259.6	985.9	925.4–1046.6

^*For the regression estimates, the association is statistically significant when the 95%CI does not cross zero. For the marginal effect estimates, the association is statistically significant when the 95%CIs do not overlap