TABLE 2.
Relative and absolute deviations of measured weight, height/length, weight‐for‐length (0–2 y) and BMI‐for‐age (2–18 y) from reference values stratified by SMA type and for the overall sample
| Weight and height/length | |||
|---|---|---|---|
| Type 1 SMA (n = 28) | Types 2/3 SMA (n = 63) | Overall sample (N = 91) | |
| Relative weight deviation (%) | |||
| Median (IQR) | −7.5 (−15.5 to −3.4) | −8.3 (−18.9 to 12.1) | −8.1 (−18.4 to 4.2) |
| Min–max | −55.9 to 18.3 | −53.3 to 118.0 | −55.9 to 118.0 |
| Z value | 69 | 813 | 1407 |
| Absolute weight deviation (kg) | |||
| Median (IQR) | −0.6 (−1.7 to −0.2) | −1.4 (−5.4 to 1.9) | −1.1 (−4.8 to 1.0) |
| Min–max | −27.8 to 2.3 | −20.5 to 51.4 | −27.8 to 51.4 |
| Relative height/length deviation (%) | |||
| Mean (SD) | −0.1 (8.2) | −3.0 (5.8) | −2.1 (6.7) |
| t statistics (df) | −0.0582 (27) | −4.01 (62) | 2.9195 (90) |
| Absolute height/length deviation (cm) | |||
| Median (IQR) | 0.2 (−2.0 to 2.4) | −2.4 (−9.0 to 0.4) | −1.6 (−7.8 to 1.4) |
| Min–max | −32.8 to 12.0 | −25.2 to 17.7 | −32.8 to 17.7 |
| Type 1 SMA | Types 2/3 SMA | Overall sample | ||||
|---|---|---|---|---|---|---|
| 0–2 y (n = 21) | 2–18 y (n = 7) | 0–2 y (n = 4) | 2–18 y (n = 59) | 0–2 y (n = 25) | 2–18 y (n = 66) | |
| Relative weight‐for‐length deviation (%) | ||||||
| Mean (SD) | −9.4 (11.5) | — | 3.7 (18.0) | — | −7.3 (13.2) | — |
| Absolute weight‐for‐length deviation (kg) | ||||||
| Mean (SD) | −0.8 (1.1) | — | 0.4 (1.8) | — | −0.6 (1.3) | — |
| Relative BMI‐for‐age deviation (%) | ||||||
| Median (IQR) | — | −10.3 (−30.4 to −9.7) | — | −0.7 (−9.6 to 10.1) | — | −2.7 (−12.0 to 10.1) |
| Min–max | — | −44.0 to 22.9 | — | −31.3 to 134.7 | — | −44.0 to 134.7 |
| Absolute BMI‐for‐age deviation (kg/m2) | ||||||
| Median (IQR) | — | −2 (−6.1 to −1.5) | — | −0.1 (−1.7 to 1.7) | — | −0.4 (−2.1 to 1.7) |
| Min–max | — | −8.0 to 3.8 | — | −5.5 to 20.8 | — | −8.0 to 20.8 |
Note: Mean (SD) and t statistics (df) were reported for variables that were normally distributed in all strata (according to Shapiro–Wilk Test with alpha = 0.05); median (IQR) and min–max for variables not normally distributed in at least one stratum. Note: Dashes indicate data were not calculated (see Supporting Information Appendix S1).
Abbreviation: df, degrees of freedom.