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Table 2 Crude outcomes by study group

From: A combination SMS and transportation reimbursement intervention to improve HIV care following abnormal CD4 test results in rural Uganda: a prospective observational cohort study

Time to clinic return Pre-intervention period (No SMS message) Intervention period (SMS + transportation reimbursement)   Direct SMS message group PIN SMS message group Coded SMS message group
  (n = 45) (n = 138) P-value* (n = 46) (n = 49) (n = 43)
Days from abnormal laboratory result to clinic return, median (IQR) 33 (11 – 49) 6 (3 – 16) <0.001 4 (2 – 13) 11 (4 – 18) 6 (3 – 15)
Proportion returned within 14 days of abnormal result (n, %) 12/45 (27) 93/138 (67) <0.001 36/46 (78) 28/49 (57) 29 /43(67)
Proportion returned within 28 days of abnormal result (n, %) 22/45 (49) 128/138 (93) <0.001 43/46 (94) 43/49 (89) 42/43 (98)
Proportion returned before scheduled visit (n, %) 11/45 (24) 96/137 (70) <0.001 33/46 (72) 34/49 (69) 29 /42 (69)
Time to ART initiation (ART-naïve only) Pre-intervention period (No SMS message) Intervention period (SMS + transportation reimbursement) P-value* Direct SMS message group PIN SMS message group Coded SMS message group
  (n = 45) (n = 138)   (n = 37) (n = 39) (n = 34)
Days from abnormal laboratory result to ART initiation, median (IQR) 47 (11 – 77) 13 (5 – 22) <0.001 8 (3 – 25) 15 (7 – 24) 15 (4 – 19)
Participants initiating ART within 14 days of abnormal result (n, %) 7/26 (27) 57/110 (52) 0.06 24 (62) 17 (46) 16 (47)
Participants initiating ART within 28 days of abnormal result (n, %) 8/26 (31) 89/110 (81%) <0.001 30/39 (77) 30/37 (81) 29/34 (85)
  1. *P-values for comparisons between the pre-intervention and post-intervention periods, using log-rank testing for continuous time to return outcomes and chi-squared testing for categorical outcomes
  2. IQR: interquartile range
  3. SMS: short message service text message
  4. ART: antiretroviral therapy