Development and pilot testing of a text message vaccine reminder system for use during an influenza pandemic

Figures & data

Figure 1. Pandemic Influenza Vaccine Text Message Reminder System (Flu Vax Alert) Message Flow Chart, Figure Legend: This figure details each message received by the user of the Flu Vax Alert system. The “DAY” number in each box states the number of days since completing enrollment that message is received. This varies based on when the participant reported receiving their first flu shot. Pilot test participants received an additional message inviting them to take the follow-up survey (not shown).

Figure 2. Pandemic Influenza Vaccine Text Message Reminder System (Flu Vax Alert) Enrollment Flowchart, Figure legend: This figure describes the number of participants enrolled in the study at a given point.

Table 1. Participant Impressions of the Two Dose Pandemic influenza Vaccine Reminder Text Message System - Participant follow-up Survey, December 2015 — April 2016.

	N = 59	(%)
Overall, the quality of the text message reminder system was _________	—	—
Outstanding	4	(7)
Good	37	(63)
Satisfactory	8	(14)
Needs Improvement	7	(12)
Unsatisfactory	0	(0)
No Answer (Missing)	3	(5)
During a pandemic, the text message system would be _________	—	—
Helpful	54	(92)
Not helpful	1	(2)
No Answer (Missing)	4	(7)

Table 2. Participant follow-up survey regarding text reminder system.

	N = 59	(%)
The best time of day to receive messages is _______	—	—
Morning	21	(36)
Midday	25	(42)
Evening	10	(17)
No Answer (Missing)	3	(5)
The text message system sent _________	—	—
Too many messages	27	(46)
The right amount of messages	28	(47)
Not enough messages	1	(2)
No Answer (Missing)	3	(5)
Text message language was _________	—	—
Informative	40	(68)
Repetitive	31	(53)
Helpful	21	(36)
Persuasive	8	(14)
Other	5	(8)
Not helpful	4	(7)
Confusing	1	(2)
The abbreviations used throughout the text message system were _______	—	—
Clear	54	(92)
Unclear	1	(2)
No Answer (Missing)	4	(7)
Additional content relating to pandemic flu worth including:	—	—
Tips on how to stay healthy during a pandemic	30	(51)
Links to health resources and more information	28	(47)
Information about adverse reactions	27	(46)
Education on how pandemic flu vaccination works	11	(19)
Other	1	(2)