Table 2

Mean (SD) differences for z-scores of height and weight, and mean differences with 95% levels of agreement for predicted height (cm) and weight (kg) between BiB1000 and PCHR data

Assessment ageMean BiB1000 height z-score(SD)Mean PCHR height z-score (SD)Mean height z-score (SD) differenceMean difference in predicted height (95% level of agreement; mean differences ±1.96× SD) (cm)
6 months0.49 (1.39)0.29 (1.16)0.21 (1.01)0.46 (−3.99 to 4.91)
12 months0.12 (1.16)0.23 (1.27)−0.10 (0.85)−0.25 (−4.50 to 4.00)
24 months−0.23 (1.02)−0.13 (1.02)−0.10 (0.58)−0.32 (−4.00 to 3.36)
Assessment ageMean BiB1000 weight z-score(SD)Mean PCHR weight z-score (SD)Mean weight z-score (SD) differenceMean difference in predicted weight (95% level of agreement; mean differences ±1.96× SD) (kg)
6 months−0.11 (1.06)−0.07 (1.08)−0.04 (0.37)−0.04 (−0.67 to 0.59)
12 months0.27 (1.07)0.33 (1.11)−0.05 (0.44)−0.06 (−1.10 to 0.98)
24 months0.23 (1.02)0.33 (1.01)−0.10 (0.35)−0.14 (−1.19 to 0.91)
  • PCHR, Personal Child Health Record.