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Table 1 Sociodemographic and school characteristics of Mexican public and private school students. Mexico, 2014

From: Association between attempted suicide and academic performance indicators among middle and high school students in Mexico: results from a national survey

  Level   X 2 df p value
Middle school High school Total
(n = 14,435) (n = 14,084) (n = 28,519)
n % n % n %
Sex 31.8 1 0.289
 Male 7253 50.5 6990 48.8 14,243 49.9    
 Female 7182 49.5 7094 51.2 14,276 50.1    
Age (years) 94,470 8 < 0.001
 11 734 5.8 734 3.6    
 12 4463 31.4 4463 19.4    
 13 4874 31.9 4874 19.7    
 14 3515 25.0 414 3.2 3929 16.6    
 15 717 4.9 4527 29.5 5244 14.3    
 16 93 0.7 4457 33.5 4550 13.2    
 17 25 0.2 3292 23.6 3317 9.2    
 18 13 0.1 918 6.2 931 2.4    
 19–29 1 0.0 476 3.9 477 1.5    
Worked the year before 544.0 2 < 0.001
 No 11,422 79.2 10,690 77.6 22,112 78.6    
 Yes, part time job 1550 11.7 2266 15.7 3816 13.2    
 Yes, full time job 1164 9.1 941 6.7 2105 8.2    
Speaks an indigenous language 401.0 1 0.001
 No 13,231 94.2 13,329 96.8 26,560 95.2    
 Yes 784 5.8 420 3.2 1204 4.8    
Size of locality 323.0 2 0.182
 Big city 3650 24.5 3853 28.1 7503 25.9    
 Medium/small city 6450 40.9 6555 42.0 13,005 41.3    
 Small town or rural area 4155 34.6 3567 29.9 7722 32.8    
Family structure 140.8 4 0.006
 Both parents 10,595 74.5 9954 72.5 20,549 73.8    
 Both parents (one surrogate) 899 5.3 767 4.7 1666 5.1    
 Mother (or surrogate) 2202 15.1 2477 17.2 4679 15.9    
 Father (or surrogate) 325 2.2 328 2.2 653 2.2    
 Other 414 2.8 558 3.4 972 3.0    
Mother’s (or surrogate's) education level 3059.6 5 < 0.001
 Elementary or no education 3590 28.2 3096 22.1 6686 25.9    
 Middle school 4523 31.3 4379 30.8 8902 31.1    
 High school 2493 17.0 3442 24.5 5935 19.9    
 University/college 1428 9.3 1718 12.5 3146 10.5    
 Postgraduate studies 1021 6.2 1056 7.8 2077 6.8    
 Other 1088 7.9 283 2.2 1371 5.7    
Father’s (or surrogate's) education level 3092.5 5 <0.001
 Elementary or no education 3439 27.2 2919 20.7 6358 24.7    
 Middle school 4170 29.7 3949 29.0 8119 29.5    
 High school 2426 16.4 3274 23.8 5700 19.2    
 University/college 1508 10.0 1937 14.2 3445 11.7    
 Postgraduate studies 1115 6.6 1194 8.4 2309 7.3    
 Other 1427 10.0 515 3.8 1942 7.6    
School shift 5271.1 2 < 0.001
 Morning 11,038 77.7 8688 58.9 19,726 70.5    
 Afternoon 3145 19.3 4156 30.8 7301 23.7    
 Other 252 3.1 1240 10.2 1492 5.8    
School yeara 453.9 2 0.437
 First (7th, 10th) 5711 41.1 6542 42.2 12,253 41.5    
 Second (8th, 11th) 5471 34.5 3826 29.1 9297 32.4    
 Third (9th, 12th) 3253 24.3 3716 28.7 6969 26.0    
  1. Missing Values: Worked last year (486); indigenous language speaker (755); place of residence (289); mother’s education (402); father’s education (646)
  2. Percentages are weighted, frequencies are unweighted; p value adjusted due to the survey design
  3. a7th, 8th and 9th grades as equivalents to the three grades of middle school and 10th, 11th and 12th for the three grades of high school. In México, middle and high school are divided into 3 grades each