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Table 2 Key findings in the clinical area of HIV/AIDS (Anti-retro Viral Therapy)

From: Positive influence of short message service and voice call interventions on adherence and health outcomes in case of chronic disease care: a systematic review

Lead Author/Year

Country

Study design

Sample size

Duration

Age group

Intervention

Delivery frequency

Measures of outcome

Results Control (C) versus Intervention (I)

Cristian Pop-Eleches/2011 [32]

Kenya

RCT

428

12 months

18+

SMS- Short and long

Short- daily, Long- weekly

Adherence to ART

Adherence of at least 90 % during 48 weeks of study in

I: 53 %

C: 40 %

Richard T Lester /2010 [25]

Kenya

RCT

538

12 months

18+

SMS

Weekly

Drug adherence, suppression of plasma viral load

Adherence to ART

I: 61.5 %; C: 49.81 %. Suppressed plasma viral loads I: 60.4; C: 48.3 %.

Rashmi Rodrigues/2012 [33]

India

Quasi-experimental cohort

150

6 months

18+

Interactive voice call and picture message

Weekly

Adherence, Pill count

Adherence at baseline, month 1, month 3, month 6, month 9 and month 12 were 85 %, 94 %, 93 %, 91 %, 95 %, and 94 % respectively.

Setor Kunutsor/2010 [24]

Uganda

Cross-sectional and descriptive

176

7 months

18+

Voice call and SMS

4 weekly

Attendance. Drug refill

Mean adherence before and after intervention was 96.3 % and 98.4 % respectively ((95 % confidence interval).

Dongsheng Huang/2013 [17]

China

RCT

172

3 months

18+

Voice call

2 weekly

Adherence to ART and quality of life (QOL)

CD4 count:

Baseline: Treatment naïve group

I: 191/mm3; C: 216/ mm3

Treatment experienced

I: 286/mm3; C: 348/ mm3.

End line: Treatment naïve group

I: 308/mm3; C: 298/ mm3.

Treatment experienced group-

I: 324/mm3; C: 356/ mm3.

Adherence rate: I: above 98 %, C: fluctuated slightly

Thiago Martini da Costa/2012 [8]

Brazil

RCT

21

4 months

18+

SMS

Every alternative working day + Sat. + Sun. day

Self-reported adherence, pill count

Self-reported adherence

I: remained 100 % in I group, C: 100 to 92.31 %

Pill count

I: 75.00 to 62.50 %.

C: 69.23 to 46.15 %.

Lawrence Mbuagbaw/2012 [26]

Cameroon

RCT

200

6 months

21+

SMS

Weekly

Visual Analogue Scale, number of doses missed (in the week preceding interview), drug refill

No significant effect on adherence by VAS > 95 % (risk ratio1.06, 95 % CI 0.89, 1.29; p = 0.542; reported missed doses (RR 1.01, 95 % CI 0.87, 1.16; p.0.999) or number of pharmacy refills (mean difference 0.1, 95 % CI: 0.23, 0.43; p = 0.617.

CD4 count at end of 3 months:

C: 327/mm3 to 375/mm3

I: 347/mm3 to 406/mm3.