Table 7 Measures of effect of secondary outcomes

Delamere 2006 [26]

Weekly SMS for 3 months

Change of sexual partner

3.66

0.95–14.05

Delamere 2006 [26]

Weekly SMS for 3 months

Unprotected sexual intercourse

2.03

0.47–8.81

De Tolly 2012 [22]

3 informational SMS vs control

Uptake of HIV counseling and testing

0.94

0.81–1.09

De Tolly 2012 [22]

10 informational SMS vs control

Uptake of HIV counseling and testing

1.02

0.89–1.17

De Tolly 2012 [22]

3 motivational SMS vs control

Uptake of HIV counseling and testing

0.86*

0.73–1.00

De Tolly 2012 [22]

10 motivational SMS vs control

Uptake of HIV counseling and testing

0.8*

0.69–0.93

Gold 2011 [29]

SMS on sexual health to increase knowledge

Correct answers in Sexual health knowledge test

1.75*

1.11–2.77

SMS on sexual health to increase knowledge

Always use condom, past 6 months

0.87

0.62–1.24

SMS on sexual health to increase knowledge

STI test, past 6 months

1.3

0.83–2.04

Jones 2013 [21]

12-week soap opera videos compared to 12 weekly SMS to reduce dangerous sexual activity

Change in vaginal episode equivalent after 6 months

-^a

-

Odeny 2014 [27]

Educational and reminder SMS messages to reduce frequency of sexual activity among men 42 days after they have been circumcised

Resumption of sexual activity before 42 days post operation

1.13

0.91–1.38

Suffoletto 2013 [28]

SMS sex risk reduction program

Condom use last vaginal sex

1.4

0.68–2.88

SMS sex risk reduction program

Condom always used during vaginal sex, past 28 days

1.4

0.49–4.00