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Table 2 Baseline measurements of patients and physicians

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

 Number of (%) of patients
N = 3815
Intervention
n = 1351
Control
n = 2464
p-value
Sex, females (%)643 (47.59)1266 (51.38)0.025
Age, mean years (SD)67.24 (±13.31)64.60 (± 14.65)< .001
HbA1c, mean % (SD)7.25 (±1.88)6.68 (± 1.12)0.088*
Blood pressure, mean mm Hg (SD)
 Systolic133.39 (±15.01)132.93 (± 14.21)0.34*
 Diastolic77.69 (±7.97)78.26 (± 19.18)0.77*
LDL cholesterol, mean mg/dL (SD)92.16 (±34.12)97.85 (± 34.68)0.19*
Number of patients on target for clinical variables
 HbA1c, number of (%)356/599 (59.43%)777/1104 (70.38%)0.03**
 Blood pressure, number of (%)797/1018 (78.29%)1180/1507 (78.30%)0.99**
 LDL cholesterol, number of (%)432/672 (64.29%)850/1475 (57.63%)0.11**
Number of patients on target for process variables
 Quarterly check HbA1c28/1351 ( 2.07%)107/2464 (4.34%)0.42**
 Quarterly check blood pressure263/1351 (19.47%)392/2464 (15.91%)0.59**
 Yearly check LDL cholesterol780/1351 (57.74%)1489/2464 (60.43%)0.75**
 Yearly check micro-albuminuria11/1351 (0.81%)202/2464 (8.20%)0.03**
 Prescription of statin425/1351 (31.46%)677/2464 (27.48%)0.24**
 Prescription of aspirin/clopidogrel44/1351 (3.26%)57/2464 (2.31%)0.12**
 Prescription of ACE-Inhibitors/sartans if antihypertensive drugs are prescribed716/1092 (65.57%)1084/1658 (65.38%)0.97**
 Number of (%) of physicians
N = 52
Intervention
n = 21
Control
n = 31
p-value
Sex, females (%)10/21 (47.62)10/31 (32.26)0.38
Age, mean years (SD)51.19 (± 11.70)50.94 (± 15.93)0.83
Language, Dutch (%)14/21 (66.67)18/31 (58.06)0.58
  1. *Baseline differences are tested by means of linear mixed models with a random effect for practice
  2. **Baseline differences are tested by means of logistic regression models with estimation by GEE to account for clustering by practice