Kids in predominantly Caucasian countries get pretty good sleep, says a new study. Better than kids in Asian countries, anyway.

This study, led by researcher Jodi Mindell of Saint Joseph's University in Philadelphia, is the first ever to look at sleep patterns in infants and toddlers cross-culturally. The results, says Mindell, are astonishing. Here are two of them.

• Mindell found significant variability in bedtimes and total sleep time. For example, 15.1 percent of children in Canada shared a room, compared to 94.5 percent in Thailand, and the percentage of parents who believed their child had a minor or severe sleep problem ranged from 11 percent in Thailand to 76 percent in China.
  
  

• Kids in Asian countries were more likely to have later bedtimes, shorter total sleep times, increased parental perception of sleep problems, and were more likely to share a room than children in Caucasian countries. But there were no significant differences in night wakings and naps.
  
  

Mindell says her findings present more questions than they do answers, like: Why the differences? Could it be different cultural practices? And what is the impact of these differences? Seems it's time for another study.