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Table 1 Baseline demographic characteristics of the sealant and control groups

From: The anticaries effects of pit and fissure sealant in the first permanent molars of school-age children from Guangzhou: a population-based cohort study

Variable Sealant group Control group P value
N = 4822(%) N = 4396(%)
Sex
 Female 2515(52.2) 2434(55.4) > 0.05
 Male 2307(47.8) 1962(44.6) > 0.05
District area
 Urban 4107(85.2) 3608(82.1) > 0.05
 Rural 715(14.8) 788(17.9) > 0.05
Total 4822 4396