Predictors of Postpartum Glucose Tolerance Testing in Italian Women with Gestational Diabetes Mellitus
Table 2
Effect of counseling on follow-up adherence.
Stratification
Followup ( = 374)
No followup ( = 785)
OR (95% CI)
value
Statistical power
Counseling ()
None
154
93
5.17 (3.83–6.97)
<0.001
>95.0%
No counseling ()
220
692
Counseling ()
Low educational status
24
47
4.08 (2.26–7.38)
<0.001
>95.0%
No counseling ()
43
341
Counseling ()
Middle/high educational status
130
173
5.25 (3.60–7.65)
<0.001
>95.0%
No counseling ()
50
351
Counseling ()
Age ≤ 30 yr
40
58
4.66 (2.71–8.01)
<0.001
>95.0%
No counseling ()
30
190
Counseling ()
Age ≥ 31 yr
108
168
5.64 (3.90–8.14)
<0.001
>95.0%
No counseling ()
56
509
Counseling ()
Parity = 1
67
100
4.46 (2.86–6.94)
<0.001
>95.0%
No counseling ()
45
301
Counseling ()
Parity ≥ 2
87
120
5.91 (3.93–8.89)
<0.001
>95.0%
No counseling ()
48
391
ORs (95% CI) were estimated using logistic regression models adjusted for prepregnancy BMI, familial history of type 2 DM, previous GDM, parity. Post-hoc statistical power calculations were performed using G*Power software 3.1, entering -squared multiple correlation coefficient obtained with regression for each trait.
