TABLE 1.
Maternal characteristics of normoglycemic women and women with abnormal oral glucose tolerance test values.
| Characteristics | Normoglycemic women | Women with one abnormal OGTT value | Women with two or more abnormal OGTT values | p‐value, normoglycemic vs one abnormal OGTT value | p‐value, normoglycemic vs two or more abnormal OGTT values | p‐value, one vs two or more abnormal OGTT values |
|---|---|---|---|---|---|---|
| n (%) | 3635 (74.7) | 877 (18.0) | 357 (7.3) | |||
| Age at delivery (years), mean (SD) | 29.5 (5.3) | 30.3 (5.5) | 30.8 (5.7) | <0.001 | <0.001 | 0.175 |
| Pre‐pregnancy BMI (kg/m2), mean (SD) | 25.8 (4.6) | 27.8 (5.7) | 29.6 (6.2) | <0.001 | <0.001 | < 0.001 |
| Primiparity, n (%) | 1720 (47.3) | 338 (38.5) | 134 (37.5) | <0.001 | <0.001 | 0.747 |
| Smoking, n (%) | 437 (12.5) | 137 (16.2) | 60 (17.6) | 0.005 | 0.009 | 0.605 |
| Socioeconomic status, n (%) | ||||||
| Upper‐level employee a | 630 (21.3) | 137 (18.9) | 52 (18.6) | 0.161 | 0.056 | 0.697 |
| Lower‐level employee b | 1219 (41.1) | 305 (42.2) | 112 (40.1) | |||
| Manual worker | 485 (16.3) | 139 (19.2) | 63 (22.6) | |||
| Other c | 629 (21.2) | 142 (19.6) | 52 (18.6) | |||
| Insulin treatment | ‐ (0.0) | 63 (7.2) | 57 (16.0) | <0.001 | <0.001 | < 0.001 |
Abbreviations: BMI, body mass index; OGTT, oral glucose tolerance test; SD, standard deviation.
a
Administrative, managerial, professional and related occupations.
b
Administrative and clerical occupations.
c
Students, pensioners, self‐employed and other.