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Table 2 Differences in variables related to maternal health during pregnancy between the study groups

From: Aetiological factors in molar incisor hypomineralisation: a case-control study from Salamanca, Spain

Factor

Percentage (frequency)

Chi-squared test

Total sample (n = 140)

Case group (n = 70)

Control group (n = 70)

Statistical

p value

Folic acid consumption

84.3% (118)

88.6% (62)

80.0% (56)

1.94

0.164NS

Vitamin D consumption

22.1% (31)

25.7% (18)

18.6% (13)

1.04

0.309NS

Vitamin B12 consumption

14.3% (20)

17.1% (12)

11.4% (8)

0.93

0.334NS

Iron consumption

10.7% (15)

12.9% (9)

8.6% (6)

0.67

0.412NS

Levothyroxine use

8.6% (12)

10.0% (7)

7.1% (5)

0.36

0.546NS

Smoking

11.4% (16)

15.7% (11)

7.1% (5)

2.54

0.111NS

Viral infections and/or fever episodes (> 38 degrees Celsius)

7.9% (11)

11.4% (8)

4.3% (3)

2.47

0.116NS

Arterial Hypertension

12.9% (18)

15.7% (11)

10.0% (7)

1.02

0.313NS

Gestational diabetes

19.3% (27)

24.3% (17)

14.3% (10)

2.25

0.134NS

Urinary tract infection (last trimester of pregnancy)

12.9% (18)

15.7% (11)

10.0% (7)

1.02

0.313NS

Drug allergies

5.0% (7)

10.0% (7)

0.0% (0)

7.37

0.007**

  1. NS = Not significant (p > 0.05); ** = Highly significant (p < 0.01).