Vital statistics records are kept as family registers by the civil authorities. During
WW II, many family registers in Okinawa were destroyed. These records were reconstructed
beginning in 1948 based on statements from family members. Comparision with authentic
documents from other sources has shown entries for events before the reconstruction
date to be incorrect.
Entries for events occurring after the reconstruction of a family register are highly
reliable. However, entries for events which occurred before the reconstruction of
a family register are not reliable.