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Table 1 Variables of the child and oral mucosal lesions of the child

From: Prevalence of oral mucosal lesions in children in Xiangyun of Yunnan, China: a cross-sectional study

  Total Non-OMLs OMLs
Sex
 Boy 1634 (51.9) 1605 (51.0) 29 (0.9)
 Girl 1511 (48.0) 1483 (47.2) 28 (0.9)
Age
 School 1582 (50.3) 1563 (49.7) 19 (0.6)
 Preschool 1563 (49.7) 1525 (48.5) 38 (1.2)
Ethnicity
 Han 2545 (80.9) 2498 (79.4) 47 (1.5)
 Others 600 (19.1) 590 (18.8) 10 (0.3)
Only child
 Yes 802 (27.5) 786 (26.9) 16 (0.6)
 No 2117 (72.5) 2076 (71.1) 41 (1.4)
Caregiver
 Parents 2598 (86.2) 2551 (84.7) 47 (1.6)
 Others 415 (13.8) 405 (13.4) 10 (0.3)
Parental education(highest level achieved)
 Less than high school 908 (29.6) 895 (29.2) 13 (0.4)
 High school diploma 814 (26.6) 801 (26.1) 13 (0.4)
 College or university 1342 (43.8) 1311 (42.8) 31 (1.0)
Last-month household income
 Less than 6000 Yuan 1701 (56.5) 1670 (55.5) 31 (1.0)
 6000-12,000 Yuan 810 (26.9) 796 (26.4) 14 (0.5)
 More than 12,000 Yuan 500 (16.6) 488 (16.2) 12 (0.4)
Residence status
 Native 880 (32.9) 851 (31.8) 29 (1.1)
 Migrant 1795 (67.1) 1766 (66.0) 29 (1.1)
Chronic disease*
 Yes 9 (0.3) 9 (0.3) 0 (0)
 No 3136 (99.7) 3079 (97.9) 57 (1.8)
  1. Data are n (% of available data). OMLs = oral mucosal lesions. The total number of participants was 3145. †Missing data: only child, n = 226, caregiver, n = 132, parental education, n = 81, last-month household income, n = 134, residence status, n = 470. *Chronic disease included leukemia (n = 1), Kawasaki disease (n = 1), cholelithiasis (n = 1), asthma (n = 2) and heart disease (n = 3)