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Table 1 Drop-out analysis comparing those included in the analysis to those lost to attrition

From: Aetiological pathways to Borderline Personality Disorder symptoms in early adolescence: childhood dysregulated behaviour, maladaptive parenting and bully victimisation

Characteristic Included (% or mean; sd) Not included (% or mean; sd) Included as reference category Odds Ratio (95% CI)
Gender
 Male 2324 (32.2%) 4896 (67.8%) [reference]
 Female 2502 (37.0%) 4254 (63.0%) 0.81 (0.75, 0.87)
Family adversity 0.99 (1.35) 1.51 (1.71) 1.26 (1.22. 1.29)
Dysregulated behaviour 4 years 7.00 (3.74) 7.70 (4.00) 1.05 (1.04, 1.06)
Dysregulated behaviour 7 years 6.18 (4.13) 6.89 (4.55) 1.04 (1.03, 1.05)
Dysregulated behaviour 8 years 6.18 (3.92) 6.82 (4.27) 1.04 (1.03, 1.05)
Maternal hitting 0.61 (0.63) 0.64 (0.68) 1.07 (0.99, 1,15)
Maternal punishment 1.68 (0.98) 1.73 (1.03) 1.05 (1.00, 1.10)
Maternal hostility 0.88 (1.04) 0.91 (1.04) 1.03 (0.98, 1.07)
Bully victimisation at 8
 No 2651 (65%) 1426 (35%) [reference]
 Yes 1642 (60%) 1096 (40%) 1.03 (1.02, 1.04)
Bully victimisation at 9
 No 3382 (58.3%) 2421 (41.7%) [reference]
 Somewhat true 814 (54.7%) 764 (45.3%) 1.13 (1.00, 1.23)
 Certainly true 108 (50.0%) 108 (50.0%) 1.40 (1.07, 1.83)
Bully victimisation at 10
 No 3569 (67.5%) 1717 (32.5%) [reference]
 Yes 1095 (62.9%) 645 (37.1%) 1.03 (1.02, 1.05)
  1. Boldface indicates a significant association