Table 1. Demographic data in the studied population (N = 1,000)
Characteristics Non-screening group (N=589) Screening group (N=411) Total
N=1,000
No risk Risk PGD* Non GDM GDM**
N=547 N=40 N=2 N=382 N=29
Mean age + SD (yr) 23.6 + 3.4 28.5 + 4.7 38.0 + 7.1 31.3 + 5.5 34.1 + 4.6 27.1 + 5.9
ParityNullipara (%) 416 (76.1) 19 (47.5) 0 (0) 164 (42.9) 9 (31) 608 (60.8)
Multipara (%) 131 (23.9) 21 (52.5) 2 (100) 218 (57.1) 20 (69) 392 (39.2)
BMI + SD (kg/m2) 20.8 + 2.9 22.0 + 3.0 25.0 + 1.4 22.4 + 3.7 24.5 + 4.3 21.6 + 3.5
*PGD = pregestational diabetes mellitus **GDM = gestational diabetes mellitus
Table 2. The efficacy of GCT for GDM detection by using
OGTT as the diagnostic test
Result GDM Non-GDM Total
Positive 29 135 164
Negative 0 247 247
Total 29 382 411
Remark: sensitivity, specificity, positive and negative
predictive value of GCT = 100%, 64.66%, 17.68%, 0%
respectively
Table 3. Indications for GDM screening (N = 451)
Indications Non-screening group Screening group Total
N=40 (%) N=411 (%) N=451 (%)
Age > 30 years 21 (52.5) 310 (75.4) 331 (73.4)
Family history of DM 17 (42.5) 91 (22.1) 108 (24.0)
Urine sugar positive 0 28 (6.8) 28 (6.2)
Obvious obesity (BMI >30 kg/m2) 0 9 (2.2) 9 (2.0)
Weight gain > 2 kg/4wksor > 1 kg/2wks 0 8 (1.9) 8 (1.8)
Previous child > 4000 gm 0 6 (1.5) 6 (1.3)
Uterine size > gestational age 0 5 (1.2) 5 (1.1)
History of death fetus in utero 1 (2.5) 3 (0.7) 4 (0.9)
Polyuria or polydipsia 0 2 (0.5) 2 (0.4)
History of fetal anomaly 2 (5.0) 0 2 (0.4)
Polyhydramnios 0 1 (0.2) 1 (0.2)
Pregnancy induced hypertension 0 1 (0.2) 1 (0.2)
History of GDM in previous gestation 0 1 (0.2) 1 (0.2)