Table 3 Indices for glycemic variability for every 6-h segment over 24 h in all HbA1c subgroups
HbA1c | Group A HbA1c ≤7.2 % | Group B 7.2 % <HbA1c ≤8.2 % | Group C 8.2 % <HbA1c ≤9.2 % | Group D HbA1c >9.2 % | P value |
|---|---|---|---|---|---|
0 a.m.–6 a.m. Mean glucose levels (mg/dL) | 86.5 (66.9–117.2) | 99.8 (85.6–144.1) | 135.0 (82.0–165.8) | 127.2 (84.2–197.4) | 0.020 |
6 a.m.–12 noon Mean glucose levels (mg/dL) | 158.3 (132.8–208.6) | 176.3 (145.5–224.1) | 188.5 (153.5–251.1) | 174.5 (143.7–237.1) | 0.105 |
12 noon–18 p.m. Mean glucose levels (mg/dL) | 127.3 (108.9–149.6) | 133.3 (120.6–190.9) | 190.5 (146.4–247.8) | 177.4 (120.7–250.3) | 0.007 |
18 p.m.–12 midnight Mean glucose levels (mg/dL) | 156.8 (110.1–195.8) | 161.5 (126.1–234.8) | 194.2 (150.1–245.2) | 210.2 (139.3–234.9) | 0.013 |
0 a.m.–6 a.m. SD (mg/dL) | 19.6 (10.8–25.3) | 18.2 (11.5–30.2) | 20.6 (13.4–31.8) | 23.0 (13.3–36.4) | 0.402 |
6 a.m.–12 noon SD (mg/dL) | 37.7 (28.4–59.2) | 40.2 (32.7–63.9) | 40.5 (35.8–68.0) | 47.1 (30.7–57.2) | 0.604 |
12 noon–18 p.m. SD (mg/dL) | 29.6 (18.1–41.2) | 27.7 (18.8–41.7) | 30.4 (21.6–51.7) | 33.5 (26.6–48.0) | 0.446 |
18 p.m.–12 midnight SD (mg/dL) | 35.5 (22.5–44.9) | 33.8 (28.3–51.5) | 35.6 (24.3–43.6) | 36.7 (25.2–54.1) | 0.891 |
0 a.m.–6 a.m. % CV | 22.6 (14.1–33.3) | 19.5 (10.6–25.1) | 17.9 (12.8–27.3) | 17.2 (11.8–26.9) | 0.608 |
6 a.m.–12 noon % CV | 26.3 (15.2–35.7) | 23.7 (18.3–30.9) | 23.5 (18.5–30.7) | 25.0 (17.6–33.5) | 0.978 |
12 noon–18 p.m. % CV | 17.9 (14.6–35.7) | 20.0 (16.1–27.0) | 18.1 (11.1–28.2) | 19.9 (13.3–29.6) | 0.905 |
18 p.m.–12 midnight % CV | 23.6 (16.9–28.0) | 21.9 (17.3–27.4) | 17.8 (12.2–23.2) | 21.0 (11.5–25.3) | 0.136 |