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. 2021 Mar 5;286:220–227. doi: 10.1016/j.jad.2021.02.078

Table 1.

Demographic Characteristics, Epidemic-related Information and Psychological Factors by Problematic Internet Use Subgroups.

No. (%)
Total (n=11254) PIU (n=3191) Non-PIU (n=8063) p valuea
Gender <0.001
Male 4054 (36.0%) 1251 (30.9%) 2803 (69.1%)
Female 7200 (64.0%) 1940 (26.9%) 5260 (73.1%)
Age, y 0.048
15-20 8139 (72.3%) 2350 (28.9%) 5789 (71.1%)
>20 3115 (27.7%) 841 (27.0%) 2274 (73.0%)
Living area during the COVID-19 pandemic <0.001
Hubei Province 6960 (61.8%) 1890 (27.2%) 5070 (72.8%)
Other provinces 4294 (38.2%) 1301 (30.3%) 2993 (69.7%)
Nation 0.237
Han nationality 10421 (92.6%) 2940 (28.2%) 7481 (71.8%)
National minority 833 (7.4%) 251 (30.1%) 582 (69.9%)
Education level <0.001
College or higher 8045 (71.5%) 2448 (30.4%) 5597 (69.6%)
Less than college 3209 (28.5%) 743 (23.2%) 2466 (76.8%)
Major 0.71
Medicine 824 (7.3%) 229 (27.8%) 595 (72.2%)
Non-medicine 10430 (92.7%) 2962 (28.4%) 7468 (71.6%)
Graduation <0.001
Yes 408 (3.6%) 153 (37.5%) 255 (62.5%)
No 10846 (96.4%) 3038 (28.0%) 7808 (72.0%)
Singlehood 0.53
Yes 9025 (80.2%) 2547 (28.2%) 6478 (71.8%)
No 2229 (19.8%) 644 (28.9%) 1585 (71.1%)
Monthly family income, ¥ <0.001
≤10,000 9290 (82.5%) 2593 (27.9%) 6697 (72.1%)
>10,000 1964 (17.5%) 598 (30.4%) 1366 (69.6%)
Only child 0.202
Yes 4995 (44.4%) 1386 (27.7%) 3609 (72.3%)
No 6259 (55.6%) 1805 (28.8%) 4454 (71.2%)
Experiencing quarantine <0.001
Yes 5215 (46.3%) 1564 (30.0%) 3651 (70.0%)
No 6039 (53.7%) 1627 (26.9%) 4412 (73.1%)
Living alone during the COVID-19 pandemic 0.58
Yes 82 (0.7%) 21 (25.6%) 61 (74.4%)
No 11172 (99.3%) 3170 (28.4%) 8002 (71.6%)
Confirmed/suspected COVID-19 or close contacting with patients <0.001
Yes 76 (0.7%) 42 (55.3%) 34 (44.7%)
No 11178 (99.3%) 3149 (28.2%) 8029 (71.8%)
Family members who are confirmed/suspected COVID-19 or close contacting with patients <0.001
Yes 80 (0.7%) 37 (46.3%) 43 (53.8%)
No 11174 (99.3%) 3154 (28.2%) 8020 (71.8%)
Acquiring some psychological knowledge during the COVID-19 pandemic 0.001
Yes 6746 (59.9%) 1832 (27.2%) 4914 (72.8%)
No 4508 (40.1%) 1359 (30.1%) 3149 (69.9%)
Receiving psychological interventions during the COVID-19 pandemic <0.001
Yes 513 (4.6%) 194 (37.8%) 319 (62.2%)
No 10741 (95.4%) 2997 (27.9%) 7744 (72.1%)
Exercising during the COVID-19 pandemic <0.001
Yes 4686 (41.7%) 1053 (22.4%) 3643 (77.6%)
No 6558 (58.3%) 2138 (32.6%) 4420 (67.4%)
Stress during the COVID-19 pandemic <0.001
High 2235 (19.9%) 911 (40.8%) 1324 (59.2%)
Moderate 4025 (35.8%) 1308 (32.5%) 2717 (67.5%)
Low 4994 (44.4%) 972 (19.5%) 4022 (80.5%)
ADHD symptoms <0.001
Yes 579 (5.1%) 385 (66.5%) 194 (33.5%)
No 10675 (94.9%) 2806 (26.3%) 7869 (73.7%)
Depression <0.001
Moderate to severe 1703 (15.1%) 1050 (61.7%) 653 (38.3%)
Mild 2970 (26.4%) 1088 (36.6%) 1882 (63.4%)
Normal 6581 (58.5%) 1053 (16.0%) 5528 (84.0%)
Anxiety <0.001
Moderate to severe 1033 (9.2%) 664 (64.3%) 369 (35.7%)
Mild 2633 (23.4%) 1176 (44.7%) 1457 (55.3%)
Normal 7588 (67.4%) 1351 (17.8%) 6237 (82.2%)
Insomnia <0.001
Moderate to severe 758 (6.7%) 458 (60.4%) 300 (39.6%)
Subthreshold 3181 (28.3%) 1456 (45.8%) 1725 (54.2%)
Normal 7315 (65.0%) 1277 (17.5%) 6038 (82.5%)
PTSD <0.001
Yes 952 (8.5%) 666 (70.0%) 286 (30.0%)
No 10302 (91.5%) 2525 (24.5%) 7777 (75.5%)

Abbreviations: PIU, Problematic internet use; ADHD symptoms, Symptoms of attention deficit and hyperactivity; COVID-19, Coronavirus disease 2019; PTSD, Post-traumatic stress disorder.

a

χ2 tests were used to compare the prevalence of PIU in different populations.