Figure 2. Mean scores of Knowledge, Attitude, and Practice (KAP) on Periodontitis Across Demographic Groups in Northeast China (Dec 31, 2024 – Jan 7, 2025). This figure shows the mean scores of Knowledge (purple line), Attitude (red line), and Practice (blue line) related to periodontitis. Error bars represent SEs of the mean. Statistical significance of differences between groups can be inferred from nonoverlapping error bars.