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Table 1 Basic demographic and clinical characteristics among patients treated with congenital upper limb malformation

From: Clinical and epidemiological features of heart-hand syndrome, an updated analysis in China

Characteristic Number %
Total 1653 100.0
Age
 0–4 1328 80.3
 5–9 202 12.3
 10+ 123 7.4
 Median 2  
Gender
 Male 1053 63.7
 Female 600 36.3
Hand abnormality
 I Failure of formation of parts (arrest of development) 70 4.2
 II Failure of differentiation (separation) of parts 537 32.5
 III Duplication 921 55.7
 IV Overgrowth 10 0.6
 V Undergrowth 79 4.8
 VI Congenital constriction band syndrome 36 2.2
Blood type
 A 260 15.7
 B 276 16.7
 O 262 15.8
 AB 86 5.2
 Missing 769 46.5
Comorbidity except for heart 122 7.4
 Toes malformation 77 4.7
 Ankle malformation 16 1.0
 Knee malformation 5 0.3
 Hip malformation 4 0.2
 Spine malformation 5 0.3
 Facial malformation 10 0.6
 Thoracic malformation 2 0.1
 Kidney malformation 2 0.1
 Anemia 1 0.1