Table 4 Differences in variables related to the children’s medical history between 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 | ||
Breastfeeding status | 2.98 | 0.396NS | ||||
No breastfeeding | 15.7% (22) | 18.6% (13) | 12.9% (9) | |||
1–6 months | 28.6% (40) | 25.7% (18) | 31.4% (22) | |||
6–12 months | 28.6% (40) | 32.9% (23) | 24.3% (17) | |||
> 12 months | 27.1% (38) | 22.9% (16) | 31.4% (22) | |||
Asthma | 10.7% (15) | 20.0% (14) | 1.4% (1) | 12.62 | 0.001** | |
Use of corticosteroids | 7.9% (11) | 11.4% (8) | 4.3% (3) | 2.47 | 0.116NS | |