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Table 1 Frequencies and percentages regarding demographics, health-related variables and self-reported experience of interpersonal maltreatment and chronic adversity in a sample of adolescents with NSSI

From: A cross-sectional study of adolescent non-suicidal self-injury: support for a specific distress-function relationship

Variables

All

Girls

Boys

 

n = 771-816

n = 437-465x

n = 331-348x

Demographic variables

 Born in Sweden

746 (92.0)

433 (93.3)

310 (90.1)

 Parents’ born in Sweden

607 (74.5)

355 (76.3)

250 (72.0)

 Theoretical education

357 (43.8)

213 (45.8)

143 (41.1)

 Both parents working

572 (74.2)

324 (74.1)

247 (74.6)

 Living with both parents

554 (68.2)

309 (66.5)

244 (70.9)

Health-related variables

 Ever smoked

461 (57.1)

276 (59.6)

183 (53.5)

 Ever tried alcohol

648 (79.6)

369 (79.4)

276 (79.8)

 Ever used drugs

129 (15.9)

64 (13.8)

64 (18.4)

 Has friend who has self-injured

560 (69.3)

379 (82.4)

179 (51.9)

 Ever had professional contact*

378 (46.8)

250 (54.5)

125 (36.2)

Experience of interpersonal maltreatment and chronic adversity

 Bullied

368 (45.1)

233 (50.1)

132 (37.9)

 Prolonged illness or handicap

111 (13.6)

63 (13.5)

48 (13.8)

 Emotional abuse

401 (49.1)

274 (58.9)

124 (35.6)

 Physical abuse by adult in family

173 (21.2)

116 (24.9)

56 (16.1)

 Sexual abuse by adult in family or other

121 (14.8)

110 (23.7)

10 (2.9)

 Parental chronic adversity+

466 (57.1)

292 (62.8)

171 (49.1)

  1. Note. NSSI = non-suicidal self-injury, xthere are three individuals with missing data on gender, which explains why the number of girls and boys do not add up to the total, together or every- other week, *not specifically for self-injury, +including alcohol or drug abuse, mental health problems, in jail, prolonged handicap or illness, separated from parent(s), divorce, quarreling during divorce.