Table 1 The most ten probable words in the topics of LDA with 20 topics
From: Text mining for identifying topics in the literatures about adolescent substance use and depression
T0: substance use | substance drug abuse alcohol marijuana cannabis users dependence illicit treatment |
T1: study | school students health ci prevalence girls boys age years high |
T2: diseases | asthma children disease levels blood years patients age serum exposure |
T3: psychiatric disorder | disorders psychiatric adhd sleep depression anxiety children symptoms clinical mdd |
T4: treatment of depression | treatment depression children trials patients therapy medication placebo clinical controlled |
T5: depression | patients pain depression children anxiety life group psychological chronic years |
T6: general terms | research health review prevention interventions social young based development people |
T7: sex and violence | sexual behaviors violence sex hiv health abuse victimization youth substance |
T8: family | children problems parents family mothers maternal parental parent offspring childhood |
T9: depression | depression symptoms depressive anxiety stress girls levels depressed coping social |
T10: alcohol drinking | alcohol drinking consumption related binge heavy age drinkers drink frequency |
T11: tobacco smoking | smoking tobacco smokers cigarette exposure smoke cigarettes current cessation nicotine |
T12: intervention program | intervention treatment program group based follow participants control months outcomes |
T13: eating, physical activity, obesity | weight american physical eating body ethnic health activity obesity girls |
T14: questionnaire of depression | scale factor scores validity depression analysis items test reliability version |
T15: health care services | health care mental services treatment patients screening primary medical problems |
T16: suicide | suicide suicidal ideation ptsd attempts depression trauma injury behavior harm |
T17: development | age early adulthood years longitudinal young time onset genetic adult |
T18: brain research | ethanol brain rats exposure adult nicotine response memory stress mice |
T19: family and peer | peer social family substance school parental behavior youth perceived protective |