* Country: Cultural norms around independence and family living differ greatly across countries. In some cultures, it's more common to live at home much longer, while in others, leaving home after high school is the norm.
* Socioeconomic status: Individuals from wealthier families may have more resources to support independent living, while those from lower socioeconomic backgrounds may be more likely to remain at home due to financial constraints.
* Education: Those pursuing higher education might stay at home to save money or be closer to campus.
* Methodology of studies: Different studies use different sampling methods and definitions of "moving out" (e.g., completely independent vs. occasional visits home).
While specific percentages are hard to pin down without a globally representative study (which doesn't readily exist), it's safe to say that the percentage is *not* a universal majority in most countries. In many Western countries, a significant portion remain at home for at least a period after high school, for reasons mentioned above. You would likely find a higher percentage in countries where it is culturally more common to leave home quickly, but even then, the figure will still be influenced by socioeconomic and individual circumstances.
Therefore, instead of providing a misleading single number, it's more accurate to say the percentage is highly variable and depends greatly on the context.