Skip to main content

Table 1 Characteristics of participants who were included in the overall analysis compared with those who were excluded

From: Associations between objectively assessed child and parental physical activity: a cross-sectional study of families with 5–6 year old children

  Included Excluded Difference
  n Mean SD n Mean SD Mean 95% CI p
Fathers          
Age (years) 423 40.1 5.4 32 40.6 5.7 0.40 −1.6 to 2.4 0.685
BMI score 423 26.1 3.8 31 26.1 4.3 0.02 −1.4 to 1.4 0.974
IMD score* 423 12.1 9.5 33 14.6 13.4 2.4 −1.1 to 5.6 0.170
Mothers          
Age (years) 651 37.5 5.4 63 39.1 6.4 1.5 0.12 to 2.9 0.033
BMI 651 25.0 4.5 66 25.8 4.1 0.84 −0.30 to 2.0 0.150
IMD score* 651 13.6 11.1 73 16.5 13.5 2.9 0.18 to 5.7 0.037
Children          
Age (years) 822 6.0 0.42 408 6.0 0.35 0.01 −0.03 to 0.06 0.539
BMI-z score 815 0.20 0.92 399 0.35 0.98 0.14 0.03 to 0.26 0.014
IMD score 822 13.3 10.8 349 19.1 15.9 5.8 4.2 to 7.4 <0.001
Boys          
Age (years) 436 6.0 0.41 197 6.0 0.39 0.00 −0.07 to 0.07 0.943
BMI-z score 433 0.26 0.97 189 0.25 0.89 −0.01 −0.17 to 0.15 0.902
IMD score 436 13.7 11.4 178 18.5 15.2 4.8 2.6 to 7.0 <0.001
Girls          
Age (years) 386 6.0 0.43 211 6.0 0.32 0.03 −0.04 to 0.09 0.405
BMI-z score 382 0.14 0.86 210 0.43 1.0 0.29 0.14 to 0.45 <0.001
IMD score 386 12.8 10.1 171 19.7 16.7 6.9 4.7 to 9.2 <0.001
  1. *A higher value indicates greater deprivation.
  2. Child BMI was standardized for age.