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Table 1 Demographics of the students from middle schools in various areas

From: Health education program improves QOL in students with irritable bowel syndrome after the Wenchuan earthquake: a five-year multi-center study

Characteristics(unit) No-education group Mean(SD) or n(%) Education group Mean(SD) or n(%) Statistics P
Longquanyi District
 Age(years) 13.8(1.65) 15.1(1.75) −4.22 0.001**
Gender
 Male 25(40.98) 21(34.43) 0.56 0.45
 Female 36(59.02) 40(65.57)
Ethnicity
 Han 61(100.00) 61(100.00) 1.00*
 Tibetan 0(0.00) 0(0.00)
 Qiang 0(0.00) 0(0.00)
 Hui 0(0.00) 0(0.00)
Wenchuan County
 Age(years) 15.2(1.64) 15.5(1.69) −1.22 0.23
Gender
 Male 36(49.32) 34(47.22) 0.04 0.85
 Female 37(50.68) 38(52.78)
Ethnicity
 Han 42(57.53) 35(48.61) 0.20*
 Tibetan 4(5.48) 7(9.72)
 Qiang 27(36.99) 29(40.28)
 Hui 0(0.00) 1(1.39)
Qingchuan County
 Age(years) 15.7(1.41) 15.7(1.39) 0.38 0.70
Gender
 Male 30(38.96) 33(42.31) 0.74 0.39
 Female 47(60.14) 45(57.69)
Ethnicity
 Han 61(79.22) 68(87.18) 1.16 0.28
 Tibetan 0(0.00) 0(0.00)
 Qiang 0(0.00) 0(0.00)
 Hui 16(20.78) 10(12.82)
Tongji Town
 Age(years) 14.4(1.49) 13.8(1.40) 2.22 0.03**
Gender
 Male 25(37.31) 39(59.09) 6.31 0.01**
 Female 42(62.69) 27(40.91)
Ethnicity
 Han 67(100.00) 66(100.00) 1.00*
 Tibetan 0(0.00) 0(0.00)
 Qiang 0(0.00) 0(0.00)
 Hui 0(0.00) 0(0.00)
  1. *Fisher’s test. SD, standard deviation.**represents that the difference is statistically significant