TABLE 1.

Characteristics of SMA in Hong Kong (N = 83)

SMA TypenGender, M:FMean Age of Onset ± SD, moDeceasedNonambulatoryAmbulatory
I229:131.6 ± 2.11660
II269:1711.5 ± 7.04220
IIIa169:715.7 ± 7.40106
IIIb197:1283.1 ± 96.30613