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Table 2 Estimated changes in appointment keeping and medication gaps resulting from the intervention among experienced and newly treated patients

From: Facility-level intervention to improve attendance and adherence among patients on anti-retroviral treatment in Kenya—a quasi-experimental study using time series analysis

   

Pre-intervention trend (% per month)

Change in level (absolute)

Change in trend (% per month)

Indicator

Cohort

Group

Coefficient (± 95% CI)

p-value

Coefficient (± 95% CI)

p-value

Coefficient (± 95% CI)

p-value

Keeping appointment or attending before appointment

Exp.

Intervention

-0.25 (-0.54, 0.04)

0.096

5.67 (2.07, 9.28)

0.002

1.04 (0.61, 1.47)

<0.001

Control

0.12 (-0.21, 0.45)

0.485

-2.78 (-7.72, 2.15)

0.268

0.64 (-0.05, 1.34)

0.071

Difference

-0.52 (-1, -0.04)

0.033

9.56 (-16.07, -3.04)

0.004

0.48 (-1.29, 0.33)

0.248

New

Intervention

-0.14 (-0.72, 0.43)

0.622

8.75 (1.21, 16.29)

0.023

-0.44 (-1.39, 0.51)

0.365

Control

0.08 (-0.45, 0.61)

0.769

-1.8 (-9.84, 6.23)

0.660

0.85 (-0.16, 1.85)

0.100

Difference

-0.72 (-1.7, 0.26)

0.147

15.39 (-26.4, -4.38)

0.006

-1.23 (-0.31, 2.76)

0.117

Keeping appointment within 3 days

Exp.

Intervention

-0.18 (-0.38, 0.01)

0.064

4.16 (1.63, 6.69)

0.001

0.84 (0.58, 1.09)

<0.001

Control

0.31 (-0.15, 0.76)

0.186

0.49 (-5.41, 6.4)

0.870

-0.12 (-0.88, 0.65)

0.765

Difference

-0.71 (-1.17, -0.25)

0.003

6.46 (1.35, 11.58)

0.013

0.96 (0.16, 1.77)

0.019

New

Intervention

0.23 (-0.44, 0.89)

0.503

2.68 (-5.34, 10.69)

0.513

0.02 (-1.35, 1.4)

0.973

Control

0.23 (-0.12, 0.58)

0.194

-1.13 (-9.68, 7.43)

0.796

0.11 (-0.86, 1.08)

0.823

Difference

-0.27 (-0.87, 0.33)

0.374

7.85 (-17.16, 1.45)

0.098

-0.31 (-0.8, 1.42)

0.585

Medication gap more than 14 days

Exp.

Intervention

-0.15 (-0.62, 0.32)

0.523

-11.3 (-22.72, 0.07)

0.051

0.18 (-1.09, 1.46)

0.778

Control

-0.48 (-0.94, -0.02)

0.041

-0.68 (-6.03, 4.66)

0.802

0.13 (-0.62, 0.87)

0.739

Difference

0.33 (-0.37, 1.02)

0.355

-10.64 (-22.62, 1.33)

0.081

0.06 (-1.22, 1.34)

0.931

New

Intervention

-0.37 (-1.42, 0.67)

0.484

-8.24 (-19.13, 2.65)

0.138

0.9 (-0.52, 2.32)

0.212

Control

0.05 (-0.44, 0.54)

0.830

-3.87 (-12.43, 4.69)

0.376

0.14 (-1.15, 1.42)

0.833

  

Difference

-0.43 (-1.75, 0.90)

0.529

-4.37 (-17.6, 8.86)

0.517

0.77 (-1.15, 2.68)

0.434

  1. Exp. = Experienced patients, New = Newly treated patients; Figures in bold show significant differences between intervention and control group.