Table 3. Comparisons of Biophysical Outcomes Between the Intervention and Control Groups Among Participants in an Individualized Lifestyle Intervention, Tianjin, China, 2008–2009a .
| Characteristic | Early (Intervention ) Group |
Late (Control) Group |
Difference in Changec | P Valueb | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Preintervention | Postintervention | Change | P Valueb | Baseline | End | Change | P Valueb | |||
| Total sample (n = 175 for early group; n = 98 for late group) | ||||||||||
| Weight, kg | 69.9 (10.8) | 68.7 (10.7) | −1.2 | <.001 | 70.6 (11.4) | 72.0 (11.9) | 1.4 | <.001 | −2.6 | <.001 |
| Waist circumference, cm | 92.7 (10.1) | 90.5 (9.8) | −2.2 | <.001 | 91.0 (11.4) | 91.7 (11.2) | 0.7 | <.001 | −2.9 | <.001 |
| Systolic blood pressure, mm Hg | 132.1 (15.8) | 127.7 (12.7) | −4.4 | <.001 | 130.0 (16.5) | 136.5 (17.1) | 6.5 | <.001 | −10.9 | <.001 |
| Diastolic blood pressure, mm Hg | 80.0 (10.0) | 77.9 (8.3) | −2.1 | <.001 | 80.1 (8.9) | 82.0 (7.4) | 1.9 | .010 | −4.0 | <.001 |
| Subsample of patients with diabetes (n = 94 for early group; n = 53 for late group) | ||||||||||
| Fasting glucose, mmol/L | 7.3 (2.4) | 7.0 (2.0) | −0.3 | .16 | 6.9 (1.8) | 7.5 (1.7) | 0.6 | .01 | −0.9 | .08 |
| 2-hour postprandial glucose, mmol/L | 10.6 (3.8) | 8.6 (1.9) | −2.0 | <.001 | 9.5 (3.1) | 9.8 (3.0) | 0.3 | .54 | −2.3 | <.001 |
| HbA1c, %d | 6.8 (1.2) | 6.5 (1.0) | −0.3 | .009 | 6.7 (1.1) | 6.9 (1.0) | 0.2 | .097 | −0.5 | .008 |
Abbreviation: HbA1c, glycated hemoglobin.
a
Values shown are mean (standard deviation) unless otherwise noted.
b
Paired t test.
c
Difference between change in intervention group and change in the control group.
d
Intention to treat analysis using the method of “last observation carried forward” (n = 4 in diabetes in the early group, n = 2 in diabetes in the late group).