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Table 2 Descriptive statistics for imputed and complete case samples

From: Is adolescent multiple risk behaviour associated with reduced socioeconomic status in young adulthood and do those with low socioeconomic backgrounds experience greater negative impact? Findings from two UK birth cohort studies

  BCS70 ALSPAC
n Complete case (n = 1358) (%) Imputed sample (n = 9691) (SE) n Complete case (n = 1360) n (%) Imputed sample (n = 9001) % (SE)
Young Adult SES Degree attainment (outcome) 6193    4425   
 High SES   499 (36.8%) 25.5% (0.6%)   871 (64.0%) 51.8% (0.8%)
 Low SES   859 (63.3%) 74.8% (0.6%)   489 (36.0%) 48.2% (0.8%)
Young Adult SES occupation status (outcome) 5158      
 High SES   742 (54.6%) 60.5% (0.5%)   3.20 (0.03)
 Low SES   616 (45.4%) 39.5% (0.5%)  
MRB total (exposure) 5805    2345   
 Mean (SD)   1.74 (1.4) 1.88 (0.02)   2.91 (1.9) 3.20 (0.03)
 Median (IQR)   2 (1–3)   3 (1–4)
Maternal Education SES (moderator) 9691    9001   
 High SES   567 (41.8%) 29.3% (0.5%)   697 (51.3%) 39.8% (0.5%)
 Low SES   791 (58.3%) 70.7% (0.5%)   663 (48.8%) 60.2% (0.5%)
Household Equivalised Income (moderator) 9691    9001   
 High SES (higher income brackets)   209 (15.4%) 22.5% (0.4%)   694 (51.0%) 42.1% (0.5%)
 Low SES (lower income brackets)   1149 (84.6%) 77.5% (0.4%)   666 (49.0%) 57.9% (0.5%)
Parental social class (moderator) 9691    9001   
 High SES   338 (24.9%) 25.3% (0.4%)   908 (66.8%) 57.4% (0.5%)
 Low SES   1020 (75.1%) 74.7% (0.4%)   452 (33.2%) 42.6% (0.5%)
Gender 9691    9001   
 Female   779 (57.4%) 51.7% (0.5%)   840 (61.8%) 48.8% (0.5%)
 Male   579 (42.6%) 48.3% (0.5%)   520 (38.2%) 51.2% (0.5%)
Season of birth     9001   
 Autumn   456 (33.5%) 33.0% (0.5%)
 Winter   186 (13.7%) 14.1% (0.5%)
 Spring   329 (24.2%) 23.2% (0.5%)
 Summer   389 (28.6%) 29.7% (0.5%)
Previous educational attainment/ability       
 IQ at age 8 Mean (SD) 5841 109.69 (15.0) 103.5 (0.2)
 KS2 educational attainment Mean (SD) 6533 913.84 (154.6) 800.6 (2.6)
Conduct problems score (age 10 years) 9083    6007   
 0   1144 (84.2%) 80.0% (0.4%)   983 (72.3%) 67.4 (0.6%)
 1   178 (13.1%) 15.2% (0.4%)   316 (23.2%) 24.9 (0.6%)
 2   36 (2.7%) 4.8% (0.2%)   61 (4.5%) 7.7% (0.5%)