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Table 3 Clinical, demographic and laboratory data according to the agreement between glycemia obtained from glucometer and the logbook records

From: The influence of demographic, social-educational determinants and diabetes management on agreement between glucometer and logbook and its impact on glycemic control in patients with type 1 diabetes: a follow-up study

Variable Group 1 Group 2 p-value
N (%) 41 (26.8) 112 (73.2)  
Gender, female n (%) 25 (61.0) 52 (46.4) 0.3
Duration of diabetes (year), median [IQR] 8.0 [17.0] 10.0 [13.0] 0.4
Age (year), mean ± SD 27.7 ± 15.2 26.3 ± 15.7 0.6
Mean age at diagnosis (year), mean ± SD 15.1 ± 10.6 15.2 ± 9.9 0.9
Age range, n (%)
 1–13 year 9 (22.0) 9 (8.0)  
 14–19 year 8 (19.6) 30 (26.8) 0.055
 > 19 year 24 (58.6) 73 (65.2)  
Years of study (year), mean ± SDa 9.6 ± 4.8 10.3 ± 3.6 0.3
Time of follow-up (year), median [IQR] 8 [17.0] 9 [13.7] 0.3
Ethnicity, n (%)
 Caucasian 24 (58.5) 57 (50.9) 0.2
Economic status, n (%)    0.6
 High 0 0  
 Medium 10 (24.4) 20 (17.9)  
 Low 27 (65.9) 83 (74.1)  
 Very low 4 (9.8) 9 (8.0)  
Living in Rio de Janeiro City, yes n (%) 31 (75.6) 90 (80.4) 0.5
Insulin U/kg 0.8 ± 0.4 0.8 ± 0.2 0.8
Glycemic control
 HbA1c (%), baseline 8.9 ± 1.8 9.6 ± 2.3 0.08
 HbA1c (mmol/mol), baseline 82.1 ± 25.9 74.6 ± 20.8  
 HbA1c (%), final 8.6 ± 1.6 9.1 ± 1.9 0.1
 HbA1c (mmol/mol), final 76.9 ± 21.3 70.9 ± 17.6  
 HbA1c (%), mean in 1 year 8.7 ± 1.3 9.4 ± 1.8 0.01
 HbA1c (mmol/mol), mean in 1 year 79.8 ± 19.5 71.7 ± 14.2  
 HbA1c (good), baseline; n (%)b 7 (17.0) 18 (16.0) 0.5
 HbA1c baseline ≥ 9.0%; n (%)c 18 (43.9) 62 (55.5) 0.4
 Hb1Ac (good), final; (%)b 3 (7.3) 10 (8.9) 0.2
 HbA1c final ≥ 9.0%; n (%)c 12 (29.2) 52 (46.4) 0.09
 HbA1c (good) (mean), (%)b 3 (7.3) 6 (5.4) 0.3
 HbA1c mean, ≥ 9.0%; n (%)c 15 (36.5) 54 (48.2) 0.2
Diabetes management
 SMBG, n 3.4 ± 1.1 3.2 ± 1.2 0.3
 Supply of glucose strips from SUS, n (%) 33 (80.5) 70 (62.5) 0.04
 Adherence to diet, yes n (%) 15 (36.6) 19 (17.0) 0.01
 BMI (kg/m2) 22.5 ± 4.5 23.7 ± 4.8 0.2
  1. The data are presented as a percentage, mean ± SD or median [IQR]
  2. y  year, F female, SMBG self-monitoring of blood glucose, SUS Sistema Único de Saúde
  3. aYears of study was considered only in adult patients
  4. bHbA1c at goal was defined as HbA1c < 7.5% (58 mmol/mol) for T1D patients between 13 and 19 years old and < 7.0% (53 mmol/mol) for adult T1D patients; cHbA1c > 9.0% (75 mmol/mol) was defined as poor glycemic control