Table 1: Age of mothers and PAB value in MSAF and control group.

GroupAges of mothers (years)*Number of mothersPAB value (HK unit)**

MSAF26 ± 5.62932.8 ± 15.9
Control25.8 ± 4.43224.5 ± 12.6

No significant difference between ages of mothers; **significant difference between PAB values ( ).