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Table 2 Prevalence rates of the most common health problems among first-graders (N = 53,053; Boy = 27,359, Girl = 25,694)

From: Morbidity at elementary school entry differs by sex and level of residence urbanization: a comparative cross-sectional study

Health problem Overall Boy Girl Significance
Myopia 27.1 25.8 28.5***
Caries 69.6 70.0 69.1***
Obesity 9.5 10.6 8.4***
Dysarthria 2.5 3.0 2.0***
Cryptorchidism - 2.1 -
Heart murmur 1.5 1.6 1.5
Scoliosis 0.4 0.4 0.4
Atopic dermatitis 0.2 0.2 0.2
  1. Statistically significant differences between boys and girls: ***indicates p < .001.