Table 1.

Demographic data and contact preferences (n = 76)

Characteristics	n (%)
Age
Less than 20 years	6 (7.9)
20 to less than 35	58 (76.3)
35 or more	12 (15.8)
Area of residence
Urban	47 (61.8)
Rural	25 (32.9)
Not available	4 (5.3)
Highest education level completed
Less than primary education	0
Primary education completed	46 (60.5)
Secondary education completed	28 (36.8)
University degree completed	2 (2.6)
Signal in home
Yes, always	73 (96.1)
Yes, sometimes	3 (3.9)
No, never	0
No answer	0
Cell phone can receive SMS
Yes, sent message and verified	70 (92.1)
Yes, sent message but did not verified	5 (6.6)
Yes, but did not send message	1 (1.3)
No, called and verified	0
No, called but did not verify	0
Don’t know/no answer	0
How many days before the visit would you like to receive a reminder?
1 Day	44 (57.9)
2 Days	26 (34.2)
3 Days	1 (1.3)
No answer	5 (6.6)
What time of day would you like to receive the message?
Morning (8 am–12 pm)	18 (23.7)
Afternoon (12 pm–4 pm)	2 (2.6)
Evening (4 pm–8 pm)	8 (10.5)
Anytime	45 (59.2)
Don’t know/no answer	3 (3.9)