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. Author manuscript; available in PMC: 2020 May 1.
Published in final edited form as: Psychiatry Res. 2019 Mar 6;275:204–211. doi: 10.1016/j.psychres.2019.03.006

Table 1.

Characteristics of Cohort Students and Non-Cohort Classmates

Characteristics Cohort students (N = 660) Non-cohort classmates (N= 1,008)
Age (mean±SD, range) 12.10 ±1.05, 11–14 years 12.20±0.60, 11–14 years
Gender, n
 Male 355 521
 Female 305 487
Residence, n
 City 262 339
 Suburban 273 279
 Rural 125 387
 Missing - 3
Father’s occupation, n
 Unemployed 9
 Unskilled labor 84
 Skilled labor 305
 Professional work 109
 Missing 153
Mother’s occupation, n
 Unemployed 51
 Unskilled labor 77
 Skilled labor 189
 Professional work 144
 Missing 199
Father’s education, n
 primary school and below 9 45
 middle school 189 261
 high school 193 305
 occupational school and above 266 270
 Missing 3 127
Mother’s education, n
 primary school and below 18 83
 middle school 261 317
 high school 157 273
 occupational school and above 221 208
 Missing 3 127