Research Article
Seasonal Pattern in the Diagnosis of Gestational Diabetes Mellitus in Southern Sweden
Table 1
Description of the study material, organized by month and season.
| | | OGTT
| GDM
(%) | 2-h glucose, mmol/L Mean (SD) | Age, years, mean (SD) | Temperature, °C, mean |
| | Month | | | | | | | January | 1 094 | 36 (3.3) | 6.4 (1.3) | 30.4 (5.0) | 0 | | February | 928 | 34 (3.7) | 6.4 (1.3) | 30.1 (5.3) | −0.6 | | March | 1 082 | 31 (2.9) | 6.4 (1.2) | 30.1 (5.2) | 2.4 | | April | 1 027 | 34 (3.3) | 6.5 (1.3) | 30.1 (5.0) | 7.5 | | May | 1 057 | 41 (3.9) | 6.5 (1.4) | 30.4 (5.1) | 12.1 | | June | 1 009 | 59 (5.8) | 6.6 (1.4) | 29.8 (5.1) | 15.2 | | July | 974 | 50 (5.1) | 6.6 (1.3) | 30.0 (5.0) | 17.7 | | August | 928 | 52 (5.6) | 6.6 (1.3) | 29.6 (5.0) | 17.6 | | September | 781 | 33 (4.2) | 6.5 (1.3) | 29.5 (5.3) | 14.4 | | October | 835 | 42 (5.0) | 6.6 (1.3) | 29.6 (5.1) | 8.4 | | November | 897 | 38 (4.2) | 6.6 (1.3) | 29.6 (5.2) | 5.3 | | December | 926 | 37 (4.0) | 6.5 (1.3) | 29.8 (5.1) | 2.9 | | Season | | | | | | | Winter | 2 948 | 107 (3.6) | 6.4 (1.3) | 30.1 (5.1) | 0.7 | | Spring | 3 166 | 106 (3.3) | 6.5 (1.3) | 30.2 (5.1) | 7.3 | | Summer | 2 911 | 161 (5.5) | 6.6 (1.4) | 29.8 (5.0) | 16.8 | | Autumn | 2 513 | 113 (4.5) | 6.6 (1.3) | 29.6 (5.2) | 9.2 |
|
|
GDM, gestational diabetes mellitus; OGTT, oral glucose tolerance test; SD, standard deviation.
|
