Table 2.
2-h PG category (mmol/L) |
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Low ( ≤ 3.5) n = 107 | Normal (3.6-7.7) n = 3066 | High ( ≥ 7.8) n = 364 | ||
Maternal age (yr) | 27.2 ± 5.8 | 28.4 ± 5.7 | 30.6 ± 5.5 | P < 0.001 |
Proportion caucasians (%) | 86 | 82 | 73 | P < 0.001 |
Birth weight in grams | 3357 ± 591 | 3480 ± 515 | 3349 ± 459 | 1P < 0.001 |
Proportion with LBW (%) | 7.5% | 2.6% | 2.5% | P = 0.008 |
Overall P < 0.001; on post hoc tests there was a significant difference only between the ”low” 2-h PG cohort compared to ”normal” 2-h PG (mean ± SE = 122.9 ± 50.3 g, P = 0.015). There was no difference in the birth weight between ”low” 2-h PG and ”high” 2-h PG cohorts. LBW: Low birth weight; 2-h PG: 2 h plasma glucose on the oral glucose tolerance test.