Final answer:
Infants under 1 year old (IDA) have a higher risk of sudden infant death syndrome (SIDS) compared to older infants. Other risk factors for SIDS include premature birth, smoking within the home, and hyperthermia.
Step-by-step explanation:
When comparing the risk factors for infants under 1 year old (IDA) and infants over 1 year old, there are several differences to consider. One major risk factor for IDA is sudden infant death syndrome (SIDS). Infants younger than 12 months have a higher risk of SIDS, with boys having a greater risk than girls. Other risk factors for SIDS include premature birth, smoking within the home, and hyperthermia. Additionally, infancy in general is associated with a higher risk of death compared to other life stages.