Table 1 Baseline characteristics of the participants according to categories of self-weighing frequency
Variables | Reference | Low frequency (< 2 times/week) | Middle frequency (2–4 times/week) | High frequency (5–7 times/week) | P value |
|---|---|---|---|---|---|
Number (%) | |||||
Intervention arm | 289 (23.3%) | 285 (23.0%) | 281 (22.7%) | 385 (31.0%) | – |
Control arm | 257 (18.8%) | 412 (30.1%) | 340 (24.9%) | 358 (26.2%) | – |
Age, years | |||||
Intervention arm | 49.9 (8.4) | 46.8 (7.8) | 48.3 (7.3) | 50.1 (7.4) | 0.263 |
Control arm | 49.7 (7.5) | 47.7 (8.1) | 48.4 (7.0) | 50.1 (7.1) | 0.112 |
Male, % | |||||
Intervention arm | 67.1% | 86.3% | 89.0% | 86.5% | < 0.001 |
Control arm | 77.8% | 86.4% | 85.0% | 85.2% | 0.063 |
BMI, kg/m2 | |||||
Intervention arm | 24.7 ± 3.6 | 24.4 ± 3.2 | 24.5 ± 3.0 | 24.1 ± 2.9 | 0.092 |
Control arm | 24.7 ± 3.3 | 24.3 ± 3.0 | 24.2 ± 3.3 | 23.9 ± 2.8 | 0.002 |
Fasting plasma glucose, mmol/L | |||||
Intervention arm | 5.92 ± 0.34 | 5.92 ± 0.35 | 5.89 ± 0.33 | 5.90 ± 0.31 | 0.988 |
Control arm | 5.90 ± 0.31 | 5.90 ± 0.33 | 5.91 ± 0.33 | 5.89 ± 0.30 | 0.568 |
The phone call participation rate, % | |||||
Intervention arm | 61.6% | 86.6% | 92.7% | 97.5% | < 0.001 |
Control arm | – | – | – | – | – |