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Table 1 Basic demographic data of the sample and migraine prevalence among different sub-groups

From: Body mass index and migraine: a survey of the Chinese adult population

  N % Prevalence n (%)
Gender
 Male 2,557 50.8 152 (5.9 %)
 Female 2,472 49.2 317 (12.8 %)
Habitation
 Urban 1,583 31.5 163 (10.3 %)
 Rural 3,446 68.5 306 (8.9 %)
Marital status
 Unmarried 514 10.2 13 (2.5 %)
 Married 4,342 86.3 438 (10.1 %)
 Divorced 61 1.2 7 (11.5 %)
 Widowed 112 2.2 11 (9.8 %)
Educational level
 Illiterate 406 8.1 47 (11.6 %)
 Primary school 1,240 24.7 145 (11.7 %)
 Secondary school 1,890 37.6 147 (7.8 %)
 High school 953 19.0 82 (8.6 %)
 College 540 10.7 48 (8.9 %)
Occupation
 Unemployed 428 8.5 40 (9.3 %)
 Farmer 2,999 59.6 304 (10.1 %)
 Worker 700 13.9 55 (7.9 %)
 Student 129 2.6 4 (3.1 %)
 Officer 654 13.0 61 (9.3 %)
 Other 99 2.0 3 (3.0 %)
 Soldier 20 0.4 2 (10.0 %)
Age (years)
 18–29 847 16.8 27 (3.2 %)
 30–39 1,068 21.2 107 (10.0 %)
 40–49 1,301 25.9 154 (11.8 %)
 50–59 1,135 22.6 115 (10.1 %)
 60–65 678 13.5 66 (9.7 %)