I googled SIDS and here is a little bit of what i found.
Most deaths due to SIDS occur between 2 and 4 months of age, and incidence increases during cold weather. African-American infants are twice as likely and Native American infants are about three times more likely to die of SIDS than caucasian infants. More boys than girls fall victim to SIDS.
Other potential risk factors include:
smoking, drinking, or drug use during pregnancy
poor prenatal care
prematurity or low birth-weight
mothers younger than 20
tobacco smoke exposure following birth
overheating from excessive sleepwear and bedding
stomach sleeping
Stomach Sleeping
Foremost among these risk factors is stomach sleeping. Numerous studies have found a higher incidence of SIDS among babies placed on their stomachs to sleep than among those sleeping on their backs or sides. Some researchers have hypothesized that stomach sleeping puts pressure on a child's jaw, therefore narrowing the airway and hampering breathing.
My son is 7 months and SIDS is my biggest fear. I'm always checking him to make sure he is breathing and comfortable (not too hot or too cold). I guess that is why I still don't have him in his crib. He still sleeps in the his pack n play in our room next to our bed (within arms reach).
I just worry about my baby boy. Peyton is the best thing that has ever happened to me and my OH.