Table 1 Foot length (mm) in reference feet* and in clubfeet** at different ages
Age (years) | Reference | Clubfeet | P value | ||
|---|---|---|---|---|---|
n | mean (SD) | n | mean (SD) | ||
2 | 36 | 140 (8) | 61 | 134 (7) | 0.001 |
2.5 | 38 | 148 (8) | 67 | 141 (8) | 0.000 |
3 | 41 | 155 (9) | 70 | 147 (9) | 0.000 |
3.5 | 37 | 160 (9) | 62 | 152 (10) | 0.000 |
4 | 43 | 165 (9) | 71 | 157 (9) | 0.000 |
4.5 | 42 | 171 (9) | 70 | 161 (10) | 0.000 |
5 | 40 | 176 (10) | 69 | 165 (10) | 0.000 |
5.5 | 33 | 179 (10) | 57 | 169 (10) | 0.000 |
6 | 37 | 185 (9) | 64 | 174 (10) | 0.000 |
6.5 | 37 | 189 (9) | 59 | 179 (9) | 0.000 |
7 | 35 | 193 (11) | 60 | 183 (12) | 0.000 |
n, number of measurements; SD, standard deviation. P values after Student’s t test. Significance set up to P < 0.005 after Bonferroni correction. *Contralateral feet in children with unilateral clubfoot. ** unilateral and bilateral (one randomly selected foot from each child was included) | |||||