Table 1 Sociodemographic characteristics of the sample
From: Aetiological factors in molar incisor hypomineralisation: a case-control study from Salamanca, Spain
Total sample (n = 140) | Case group (n = 70) | Control group (n = 70) | Student’s t test | p value | |||
|---|---|---|---|---|---|---|---|
Mean age (years) (SD) | 9.34 (± 2.73) | 9.10 (± 2.32) | 9.57 (± 3.09) | 1.02 | 0.309NS | ||
Sex | Chi-squared | p value | |||||
Boy | 45.0% (63) | 44.3% (31) | 45.7% (32) | Chi2 = 0.03 (ns) | 0.865NS | ||
Girl | 55.0% (77) | 55.7% (39) | 54.3% (38) | ||||