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Table 5 Coefficient and 95% confidence interval for the association between physical activity and z-BMI

From: Association of diet in nurseries and physical activity with zBMI in 2–4-year olds in England: a cross-sectional study

  n Mean (SD) zBMI UK 1990 zBMI IOTF
Crude Adjusteda Crude Adjusteda
Counts per minuteb 114 567.30 (130.17) 0.07 (−0.07, 0.20) 0.13 (−0.01, 0.27) 0.07 (− 0.07, 0.20) 0.13 (− 0.02, 0.27)
Minutes spent in sedentaryc 114 494.75 (52.50) −0.01 (− 0.04, 0.03) −0.00 (− 0.04, 0.03) −0.01 (− 0.04, 0.03) −0.00 (− 0.04, 0.03)
Minutes spent in LPAc 114 121.32 (25.54) 0.05 (−0.02, 0.11) 0.08 (0.01, 0.15) 0.05 (−0.02, 0.11) 0.08 (0.01, 0.15)
Minutes spent in MVPAc 114 22.23 (9.32) 0.09 (−0.09, 0.28) 0.20 (− 0.01, 0.40) 0.09 (− 0.09, 0.27) 0.19 (− 0.01, 0.39)
Minutes spent in active timec 114 143.55 (32.43) 0.04 (−0.02, 0.09) 0.07 (0.01, 0.12) 0.04 (−0.02, 0.09) 0.06 (0.01, 0.12)
Proportion of time spent in sedentary 114 77.47 (4.89) −0.02 (− 0.06, 0.02) −0.04 (− 0.07, 0.00) −0.02 (− 0.05, 0.02) −0.03 (− 0.07, 0.00)
Proportion of time spent in LPA 114 19.02 (3.79) 0.03 (−0.02, 0.07) 0.04 (−0.00, 0.09) 0.03 (− 0.02, 0.07) 0.04 (− 0.01, 0.09)
Proportion of time spent in MVPA 114 3.50 (1.47) 0.05 (−0.07, 0.16) 0.10 (−0.03, 0.23) 0.05 (− 0.07, 0.16) 0.10 (− 0.03, 0.22)
Proportion of time spent in active time 114 22.52 (4.89) 0.02 (−0.02, 0.06) 0.04 (−0.00, 0.07) 0.02 (− 0.02, 0.05) 0.03 (− 0.00, 0.07)
  1. a Adjusted for age, ethnicity, parental education and cluster
  2. b zBMI for each 100 counts per minute increment
  3. c zBMI for each 10 min increment
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