Table 1 The comparison of CES-D and GAD-7 scores between the first (n = 9554) and second (n = 3886) surveys.

From: Depression, anxiety and associated factors among Chinese adolescents during the COVID-19 outbreak: a comparison of two cross-sectional studies

Variables Scores of CES-D Scores of GAD-7
The first survey The second survey Z P value The first survey The second survey Z P value
Gender
male 13.17 ± 10.13 18.74 ± 11.66 −18.09 <0.001 1.98 ± 3.37 3.77 ± 4.49 −17.47 <0.001
female 14.87 ± 11.33 19.75 ± 11.93 −16.79 <0.001 2.55 ± 3.66 4.16 ± 4.43 −17.43 <0.001
Age (years)
11–15 12.67 ± 10.27 17.77 ± 11.96 −15.43 <0.001 1.95 ± 3.28 3.58 ± 4.52 −14.12 <0.001
16–20 16.03 ± 11.23 20.18 ± 11.65 −14.50 <0.001 2.75 ± 3.83 4.22 ± 4.41 −16.22 <0.001
Grade
Junior secondary school 12.66 ± 10.31 17.69 ± 12.12 −14.25 <0.001 1.94 ± 3.29 3.56 ± 4.62 −12.62 <0.001
Senior secondary school 15.91 ± 11.16 20.06 ± 11.60 −14.95 <0.001 2.73 ± 3.79 4.19 ± 4.37 −16.60 <0.001
School type
Provincial key schools 13.95 ± 10.87 19.99 ± 11.97 −7.12 <0.001 2.64 ± 4.09 4.77 ± 4.46 −8.78 <0.001
Municipal key schools 13.01 ± 10.58 19.08 ± 12.67 −9.06 <0.001 2.37 ± 3.64 4.28 ± 4.99 −8.35 <0.001
Ordinary schools 13.75 ± 10.69 19.52 ± 11.77 −22.90 <0.001 2.16 ± 3.43 3.97 ± 4.41 −22.33 <0.001
Vocational schools 15.86 ± 11.09 16.10 ± 10.40 −0.77 0.441 2.43 ± 3.53 2.86 ± 4.02 −1.18 0.237
Major class 13.12 ± 10.70 20.55 ± 11.52 −18.20 <0.001 2.38 ± 3.70 4.27 ± 4.32 −15.92 <0.001
Sleep duration/day
<6 h 22.06 ± 13.50 26.30 ± 13.28 −4.79 <0.001 4.94 ± 5.65 6.67 ± 6.01 −4.95 <0.001
6–8 h 14.56 ± 10.70 19.11 ± 11.32 −18.30 <0.001 2.39 ± 3.45 3.84 ± 4.13 −18.52 <0.001
>8 h 12.38 ± 10.06 15.37 ± 10.89 −6.89 0.019 1.81 ± 3.15 2.83 ± 3.90 −6.90 <0.001
Study duration/day
<4 h 16.66 ± 11.49 17.97 ± 11.57 −2.06 0.039 2.68 ± 4.00 3.63 ± 4.54 −3.80 <0.001
4–8 h 13.30 ± 10.19 18.46 ± 11.38 −19.29 <0.001 2.08 ± 3.24 3.64 ± 4.17 −18.57 <0.001
>8 h 13.98 ± 11.22 21.53 ± 12.50 −17.84 <0.001 2.40 ± 3.72 4.80 ± 4.87 −17.13 <0.001
Exercise duration/day
<30 min 16.13 ± 11.31 21.65 ± 12.08 −17.22 <0.001 2.68 ± 3.82 4.55 ± 4.67 −17.82 <0.001
30–60 min 12.29 ± 9.90 16.89 ± 10.73 −15.89 <0.001 1.91 ± 3.15 3.35 ± 3.97 −15.52 <0.001
>60 min 12.31 ± 10.57 17.82 ± 12.55 −7.93 <0.001 2.10 ± 3.62 3.87 ± 4.88 −7.42 <0.001
Change of study efficiency
Lower than before 17.25 ± 11.63 20.67 ± 11.94 −11.38 <0.001 3.03 ± 4.10 4.33 ± 4.53 −13.68 <0.001
About the same 12.60 ± 9.97 16.40 ± 10.98 −11.14 <0.001 1.87 ± 3.10 3.20 ± 4.09 −10.73 <0.001
Higher than before 12.18 ± 10.39 17.26 ± 11.62 −6.32 <0.001 2.19 ± 3.53 3.70 ± 4.82 −4.86 <0.001
No. of COVID-19 cases at provincial level
10–99 14.07 ± 11.16 24.17 ± 13.54 −1.19 0.235 2.70 ± 4.03 2.50 ± 3.27 −0.77 0.442
100–999 14.29 ± 10.61 19.49 ± 11.86 −22.89 <0.001 2.22 ± 3.38 4.08 ± 4.50 −23.23 <0.001
1000–9999 13.08 ± 10.86 17.39 ± 11.63 −5.74 <0.001 1.94 ± 3.32 2.83 ± 3.97 −3.91 <0.001
>10,000 14.59 ± 11.17 16.63 ± 10.28 −2.46 0.014 2.41 ± 3.66 3.16 ± 3.51 −2.75 0.006
Participating in distance learning 13.80 ± 10.73 19.29 ± 11.81 −25.57 <0.001 2.24 ± 3.52 3.97 ± 4.44 −24.96 <0.001
Concerned about entering a higher grade 16.32 ± 11.29 20.70 ± 11.80 −16.16 <0.001 2.83 ± 3.95 4.39 ± 4.55 −17.64 <0.001
  1. Bolded Values: P < 0.05.
  2. The scores of CES-D and GAD-7 were presented as mean ± standard deviation.
  3. CES-D Center for Epidemiological Studies-Depression Scale, GAD-7 7-item Generalized Anxiety Disorder Scale.