The rate of asthma patients by educational level: Academic level Hong Thai (n=200) Quoc Tuan (n=255) Total (n=455) p n (%) n (%) n% Unlettered 9 4, 5 18 7, 1 27 5, 9 >0, 05 Primary school 49 24, 5 76 29, 8 126 27, 7 >0, 05 Junior high school 100 50, 0 115 45, 1 215 47, 3 >0, 05 High school 34 17, 0 40 15, 7 74 16, 3 >0, 05 Intermediate 4 2, 0 4 1, 6 8 1, 7 >0, 05 Colleges, universities 4 2, 0 2 0, 8 6 1, 3 >0, 05 Comment: The majority of patients have a low level of education, from secondary school down to 80.9%, illiterate 5.9%, upper higher, school accounting for 19.3%.