Table 1.
Comparison of medical data and DDQOL of the control and intervention groups
| Variable | Baseline | At 1 month | P * | At 3 months | P * |
|---|---|---|---|---|---|
| Control group (n = 36) | |||||
| Weight (kg) | 76.3 (66.3–84.0) | 76.8 (66.8–84.3) | 0.022 | 77.0 (66.7–84.0) | 0.177 |
| Height (cm) | 170.8 (165.0–174.1) | ||||
| BMI (kg/m2) | 26.4 (23.6–28.6) | 26.4 (23.8–28.7) | 0.024 | 26.2 (24.0–28.7) | 0.172 |
| HbA1c (%) | 6.7 (6.2–6.9) | 6.7 (6.2–6.9) | 0.324 | 6.7 (6.2–7.0) | 0.223 |
| SBP (mmHg) | 123 (117–133) | 127 (114–134) | 0.844 | 123 (115–138) | 0.731 |
| DBP (mmHg) | 78 (70–86) | 76 (68–83) | 0.309 | 77 (70–86) | 0.806 |
| Satisfaction with diet | 16 (15–16) | 15 (14–16) | 0.215 | 16 (14–16) | 0.548 |
| Burden of diet therapy | 22 (20–25) | 23 (20–26) | 0.466 | 24 (20–27) | 0.154 |
| Perceived merits of diet therapy | 17 (16–19) | 18 (16–19) | 0.107 | 18 (16–20) | 0.077 |
| Intervention group (n = 38) | |||||
| Weight (kg) | 74.9 (64.7–83.1) | 74.1 (64.4–82.5) | 0.030† | 74.6 (65.1–83.3) | 0.711 |
| Height (cm) | 168.0 (165.0–175.0) | ||||
| BMI (kg/m2) | 26.1 (22.8–28.3) | 25.8 (23.0–28.1) | 0.041† | 26.0 (23.0–28.2) | 0.788 |
| HbA1c (%) | 6.6 (6.3–7.0) | 6.6 (6.4–7.1) | 0.597 | 6.6 (6.4–7.0) | 0.059 |
| SBP (mmHg) | 125 (113–134) | 127 (120–136) | 0.050 | 127 (118–138) | 0.085 |
| DBP (mmHg) | 74 (67–79) | 76 (70–83) | 0.106† | 75 (70–82) | 0.065 |
| Satisfaction with diet | 16 (15–16) | 16 (14–16) | 0.359 | 16 (14–16) | 0.029 |
| Burden of diet therapy | 23 (21–25) | 24 (21–27) | 0.020 | 24 (19–27) | 0.716 |
| Perceived merits of diet therapy | 18 (16–19) | 17 (16–19) | 0.670 | 18 (16–19) | 0.505 |
Values are presented as median (interquartile range).
*Wilcoxon matched paired signed-rank test was used to compare medical data and DDQOL between baseline and after 1 and 3 months within each group; †P< 0.05 on Mann-Whitney U-test for comparison of changes of medical data and DDQOL from baseline to 1 and 3 months between groups.
DDQOL, diabetes diet-related quality of life scale; BMI, body mass index; HbA1c, glycosylated hemoglobin; SBP, systolic blood pressure; DBP, diastolic blood pressure.