Table 2.

Face-to-Face Visit Frequencies Before and After Date of First Portal Message With and Without Adjustment for First Message Visit Surge (N=2,357)

		VISIT FREQUENCY (VISITS/YEAR) WITH/WITHOUT ADJUSTMENT FOR FIRST MESSAGE VISIT SURGE
		NOT ADJUSTED			ADJUSTED
PATIENT PORTAL MESSAGE USER GROUP	PATIENT [% (n)]	BEFORE	AFTER	P VALUEa	BEFORE	AFTER	P VALUEa
All	100 (2,357)	2.43	2.47	0.45	2.35	2.35	0.93
Female	74.3 (1,752)	2.54	2.58	0.48	2.46	2.48	0.71
Male	25.7 (605)	2.12	2.14	0.79	2.03	1.98	0.54
Resides out of county	16.2 (383)	2.42	2.27	0.18	2.34	2.13	0.08
Age under 45 years	46.5 (1,095)	2.47	2.67	0.02	2.39	2.56	0.07
Mayo employee	75 (1,768)	2.39	2.46	0.25	2.32	2.35	0.71
Not Mayo employee	25 (589)	2.55	2.50	0.65	2.42	2.37	0.66
Long-term user (follow up over 1 year)	51.7 (1,219)	2.52	2.42	0.12	2.44	2.34	0.14
Short-term user (follow up less than 1 year	48.3 (1,138)	2.33	2.53	0.03	2.25	2.36	0.20
At least 1 e-visit	25.2 (594)	2.67	2.87	0.12	2.66	2.69	0.81
Secure messages only	74.8 (1,763)	2.35	2.34	0.86	2.24	2.24	0.95
7 or more messages sent	8.7 (205)	3.86	3.99	0.64	3.77	3.83	0.84
Charlson index 1 or more	41.5 (977)	3.07	3.02	0.59	2.98	2.91	0.50
Message response time to patient was over 24 hb	16.8 (396)	2.27	2.28	0.91	2.19	2.22	0.83
Message response to patient was 4 h or lessb	47.1 (1,109)	2.49	2.55	0.47	2.42	2.44	0.80

^aMatched-pairs t test.

^bMedian of all message responses to that patient.

e-visit, electronic visit.