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Table 1 Health System Navigator (HSN) phone call and SMS schedule

From: A randomized trial to optimize HIV/TB care in South Africa: design of the Sizanani trial

Week Number Post-Enrollment

  

1

1.5

3

4

6

8

12

16

Type of Contact*

SMS

 

X

X

 

X

 

X

 
 

Phone

X

  

X†

 

X

X

X‡

  1. *If participants are not reached at the time of a telephone call, the contact schedule is intensified by turning the next designated SMS reminder into a phone call. For example, if a subject is not reached at the week 1 phone call, the week 1.5 SMS becomes a phone call. The contact schedule differs slightly by study site, based on the site-specific time to return for CD4 count results.
  2. †HSN calls subject’s alternative contacts if the subject is still unreachable.
  3. ‡ Participants are considered unreachable if the HSN still cannot contact them.