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Table 3 Change differences between groups in HbA1c, LDL cholesterol and blood pressure

From: Computerized clinical decision support system for diabetes in primary care does not improve quality of care: a cluster-randomized controlled trial

 Control estimated mean (95% CI)Intervention estimated mean
(95% CI)
Change difference IG-CG estimated mean (95% CI)
HbA1c
 Baseline (BL)6.69 (6.46; 6.92)6.99 (6.75; 7.25) 
 6 months (6M)6.64 (6.41; 6.88)6.97 (6.72; 7.22) 
 12 months (12M)6.68 (6.45; 6.91)6.89 (6.65; 7.15) 
Change BL–6M− 0.05 (− 0.08; − 0.00)− 0.03 (− 0.09; 0.03)0.02 (− 0.05; 0.09)
Change BL–12M− 0.01 (− 0.07; 0.05)− 0.09 (− 0.17; − 0.02)− 0.09 (− 0.18; 0.01)
Systolic blood pressure
 Baseline132.40 (129.87; 134.94)134.41 (131.76; 137.06) 
 6 months131.76 (129.23; 134.30)134.43 (131.78; 137.07) 
 12 months131.72 (129.19; 134.25)133.85 (131.21; 136.48) 
Change BL–6M− 0.64 (− 1.17; − 0.11)0.02 (− 0.64; 0.68)0.66 (− 0.19; 1.51)
Change BL–12M− 0.69 (− 1.35; − 0.03)- 0.56 (-1.36; 0.24)0.13 (− 0.91; 1.16)
Diastolic blood pressure
 Baseline77.87 (75.92; 79.82)78.08 (76.02; 80.14) 
 6 months77.58 (75.59; 79.57)77.68 (75.54; 79.81) 
 12 months77.32 (75.49; 79.15)77.65 (75.77; 79.53) 
Change BL–6M− 0.29 (− 1.47; 0.88)− 0.40 (− 1.86;1.06)− 0.11 (− 1.98;1.76)
Change BL–12M− 0.55 (− 1.42; 0.32)− 0.43 (− 1.49; 0.62)0.12 (− 1.25; 1.49)
LDL cholesterol
 Baseline100.01 (95.74; 104.27)93.706 (88.977; 98.435) 
 6 months98.18 (93.91; 102.45)93.027 (88.314; 97.740) 
 12 months95.92 (91.65; 100.18)91.375 (86.684; 96.065) 
Change BL–6M− 1.83 (− 2.71; − 0.95)− 0.68 (− 1.82; 0.47)1.15 (− 0.29; 2.59)
Change BL–12M− 4.09 (− 5.34; − 2.85)− 2.33 (− 4.17; − 0.49)1.76 (− 0.46; 3.98)