Parental education level, ranging from lower to higher, displayed a notable trend in e-cigarette perception score mean = 2.96, 2.86, 2.67, 2.60, 2.46, respectively.
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Regarding grade level, 10th and 12th grades (b = −0.44, 95% CI: −0.93, 0.04, and b = −0.43, 95% CI: −0.89, 0.03, respectively) showed a trend toward lower e-cigarette perception compared to 9th grade, suggesting that higher-grade levels may be associated with reduced e-cigarette safety perceptions, though not statistically significant.