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Means and standard deviations of variables by problematic social networking site usage (PSNSU) group
| VARIABLE | PSNSU Yes(n = 276) Mean ± SD |
PSNSU No (n = 796) Mean ± SD |
p |
|---|---|---|---|
| Age (yr) | 12.62 ± 0.99 | 12.17 ± 0.98 | < 0.001 |
| Average school marks | 6.97 ± 1.02 | 7.36 ± 0.98 | < 0.001 |
