Table 2.
Comparisons of baseline characteristics between group A (the family portal use group) and group B (the non–family portal use group) after matching.
| Variablea | Group A (n=394) | Group B (n=394) | Standardized mean difference, % | P value | ||
| Gender, n (%) | .61 | |||||
| Male | 232 (58.9) | 225 (57.1) | 3.59 | N/Ab | ||
| Female | 162 (41.1) | 169 (42.9) | 3.59 | N/A | ||
| Education, n (%) | .54 | |||||
| Junior middle school or below | 95 (24.1) | 82 (20.8) | 7.91 | N/A | ||
| High school | 126 (32.0) | 133 (33.8) | 3.79 | N/A | ||
| College or above | 173 (43.9) | 179 (45.4) | 3.06 | N/A | ||
| Age, years (IQR) | 50.16 (42.34-58.46) | 50.69 (42.20-60.02) | 7.62 | .38 | ||
| Baseline fasting blood glucose, mmol/L (SD) | 7.44 (1.91) | 7.50 (1.88) | 2.96 | .51 | ||
| Baseline postprandial blood glucose, mmol/L (SD) | 9.40 (2.82) | 9.55 (2.84) | 5.25 | .34 | ||
| Duration of diabetes, months (IQR) | 18.84 (1.10-100.27) | 25.92 (1.33-108.20) | 4.72 | .49 | ||
| Baseline self-monitoring of blood glucose frequency, times per week (SD) | 16.20 (10.30) | 16.33 (10.22) | 1.29 | .75 | ||
| Insulin regimen, n (%) | .47 | |||||
| Premixed insulin | 324 (82.2) | 316 (80.2) | 5.2 | N/A | ||
| Fast-acting insulin (with/without long-acting insulin) | 70 (17.8) | 78 (19.8) | 5.2 | N/A | ||
| Baseline education courses, n (IQR) | 3.0 (1.0-9.0) | 2.0 (1.0-8.0) | 1.83 | .44 | ||
aContinuous variables are presented as means with standard deviations or medians with IQRs, and categorical variables are presented as n (%).
bN/A: not applicable.