Individual age group breakdown
| Age group | n | Mean weight (kg) | Mean weight differences for weight = 2(age+4)(current formula) | Mean weight differences for weight = 3(age)+7 |
|---|---|---|---|---|
| All mean weight differences are percentages. Figures in brackets represent 95% confidence intervals (95% CI). A negative sign implies a mean weight overestimate by the formula. If no sign is present, value represents a mean weight underestimate by the formula. | ||||
| 1 | 3072 | 11.15 | 11.47 (10.87 to 12.07) | 11.47 (10.87 to 12.07) |
| 2 | 2116 | 13.72 | 14.36 (13.64 to 15.08) | 5.56 (4.90 to 6.23) |
| 3 | 1600 | 16.09 | 14.92 (14.10 to 15.75) | 0.56 (−0.17 to 1.28) |
| 4 | 1212 | 18.61 | 16.28 (15.19 to 17.38) | −2.08 (−3.00 to −1.16) |
| 5 | 1010 | 20.86 | 15.91 (14.63 to 17.19) | −5.17 (−6.21 to −4.12) |
| 6 | 965 | 23.73 | 18.63 (17.20 to 20.06) | −5.10 (−6.24 to −3.96) |
| 7 | 918 | 26.88 | 22.20 (20.53 to 23.87) | −3.99 (−5.30 to −2.67) |
| 8 | 974 | 30.57 | 27.39 (25.77 to 29.01) | −1.37 (−2.63 to −0.12) |
| 9 | 1014 | 34.24 | 31.69 (29.91 to 33.47) | 0.71 (−0.65 to 2.07) |
| 10 | 1107 | 38.26 | 36.65 (34.87 to 38.43) | 3.41 (2.07 to 4.76) |
| Overall means | 18.80 (18.42 to 19.18) | 2.48 (2.17 to 2.79) | ||