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 |
Data presented as median (25–75 percentiles)
Italic values indicate significance of P value (P < 0.05)
aKruskal–Wallis test