A Vitamin Pattern Diet Is Associated with Decreased Risk of Gestational Diabetes Mellitus in Chinese Women: Results from a Case Control Study in Taiyuan, China
Table 6
Vitamin nutrient pattern and risk of GDM stratified by parity.
Vitamin pattern
Nulliparous
Parous
Cases
Controls
OR
95%CI
Cases
Controls
OR
95%CI
One year before pregnancy
Q1
176
959
1.00
228
1,026
1.00
Q2
178
1,063
0.92
0.73-1.16
200
948
0.92
0.74-1.14
Q3
167
1,049
0.83
0.65-1.05
204
969
0.89
0.72-1.11
Q4
140
1,052
0.70
0.55-0.90
171
1,026
0.73
0.58-0.91
Total
0.89
0.83-0.96
0.91
0.85-0.97
for trend
0.003
0.006
The first trimester
Q1
170
953
1.00
234
1,032
1.00
Q2
176
1,055
0.91
0.72-1.15
193
965
0.87
0.70-1.08
Q3
174
1,057
0.86
0.68-1.09
206
952
0.92
0.74-1.13
Q4
141
1,058
0.70
0.55-0.90
170
1,020
0.71
0.57-0.89
Total
0.90
0.83-0.97
0.91
0.85-0.98
for trend
0.006
0.008
The second trimester
Q1
172
938
1.00
230
1,049
1.00
Q2
189
1,068
0.94
0.75-1.18
199
933
0.95
0.76-1.18
Q3
153
1,051
0.74
0.58-0.95
202
978
0.88
0.71-1.09
Q4
147
1,066
0.72
0.56-0.91
172
1,009
0.76
0.60-0.94
Total
0.88
0.82-0.95
0.91
0.85-0.98
for trend
0.001
0.011
Adjusted for maternal age for years, education, body mass index, gestational week, high blood pressure, and family history of diabetes.
