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Table 1 Characteristics of patients included in the retrospective full cohort

From: Impact of a clinical program using weekly Short Message Service (SMS) on antiretroviral therapy adherence support in South Africa: a retrospective cohort study

Variable

Exposed (n = 1771)

Unexposed (n = 316)

Unknown (n = 168)

P-value for all

P-value for Exposed vs. Unexposed

Age in years (IQR)

37.7 (32.4–43.9)

38.9 (33.1–46.6)

37.7 (31.7–42.9)

0.015

0.006

Female

1,253 (70.8%)

203 (64.2%)

117 (69.6%)

0.068

0.020

ART duration in years (IQR)

2.4 (1.5–3.3)

2.5 (1.6–3.5)

2.5 (1.2–3.4)

0.270

0.120

Prescription length in days (IQR)

180 (65–180)

180 (66–180)

90 (36–180)

<0.001

0.846

Patients (%) with…

   

<0.001

0.710

1-month prescriptions

227 (12.8%)

43 (13.6%)

48 (28.6%)

  

2-month prescriptions

282 (15.9%)

48 (15.2%)

24 (14.3%)

  

3-month prescriptions

234 (13.2%)

35 (11.1%)

18 (10.7%)

  

6-month prescriptions

1028 (58.0%)

190 (60.1%)

78 (46.4%)

  

First line regimen

1,675 (94.6%)

295 (93.4%)

151 (89.9%)

0.041

0.383

Fixed dose combination

28 (1.6%)

5 (1.6%)

9 (5.4%)

0.002

0.999

No pre-program observation time

93 (5.3%)

22 (7.0%)

25 (14.9%)

<0.001

0.220

Transfer out during observation

61 (3.4%)

8 (2.5%)

9 (5.4%)

0.269

0.507

  1. IQR interquartile range
  2. Values reflect data collection on November 4, 2012 (for age and ART duration) or as of first statistical observation (for all others). Bold indicates statistical significance (P < =0.05)