Table 4 Direct indicators of burden of learning and chronic pain in high school students

(A)

Q1: Do you feel much pressure from parents and teachers?

<0.001

<0.001

<0.001

<0.001

No

34.7 %

1

26.9 %

1

23.6 %

1

16.6 %

1

Yes

52.9 %

1.93 (1.61–2.32)

43.8 %

1.89 (1.57–2.28)

43.3 %

2.26 (1.86–2.74)

27.4 %

1.73 (1.41–2.14)

Q2: Do you have a good relationship with other students?

N

0.01

<0.001

0.004

No

39.0 %

35.7 %

1

36.7 %

1

24.4 %

1

Yes

40.9 %

31.5 %

0.74 (0.60–0.93)

28.4 %

0.62 (0.50–0.78)

19.1 %

0.70 (0.55–0.89)

Q3: Do you have extra learning tasks after class?

0.001

0.002

<0.001

No

36.5 %

1

28.8 %

1

26.2 %

1

19.4 %

N

Yes

45.6 %

1.33 (1.12–1.58)

36.8 %

1.33 (1.11–1.59)

34.7 %

1.44 (1.20–1.73)

20.9 %

(B)

Q4: Do you feel very tired after school?

<0.001

<0.001

<0.001

<0.001

No

25.2 %

1

18.7 %

1

16.9 %

1

13.0 %

1

Yes

50.5 %

2.72 (2.28–3.26)

41.1 %

2.76 (2.27–3.36)

38.4 %

2.63 (2.15–3.21)

24.6 %

1.99 (1.59–2.49)

Q5: How long have you been studying every day?

<0.001

<0.001

0.006

0.086

<4 h

43.7 %

1

33.4 %

1

29.3 %

1

18.2 %

1

4–6 h

45.5 %

0.92 (0.65–1.28)

41.3 %

1.26 (0.89–1.77)

30.2 %

0.95 (0.66–1.37)

22.2 %

1.18 (0.79–1.77)

6–8 h

32.1 %

0.60 (0.44–0.82

19.6 %

0.48 (0.34–0.68)

20.0 %

0.67 (0.47–0.94)

15.7 %

0.86 (0.59–1.27)

8–10 h

36.0 %

0.64 (0.48–0.86)

28.6 %

0.73 (0.54–0.98)

30.4 %

0.95 (0.70–1.29)

18.3 %

0.95 (0.67–1.36)

>10 h

45.0 %

0.96 (0.74–1.26)

37.9 %

1.15 (0.87–1.53)

34.8 %

1.16 (0.86–1.55)

23.4 %

1.26 (0.91–1.75)

Q6: What is your rank in school?

<0.001

0.003

0.006

0.026

<25 %

36.1 %

1

27.7 %

1

28.2 %

1

16.6 %

1

25 %–50 %

42.1 %

1.45 (1.17–1.81)

33.3 %

1.46 (1.16–1.84)

27.7 %

1.08 (0.85–1.36)

20.3 %

1.33 (1.02–1.73)

50 %–75 %

39.2 %

1.14 (0.90–1.44)

32.5 %

1.26 (0.98–1.61)

30.2 %

1.08 (0.84–1.40)

20.5 %

1.22 (0.92–1.62)

>75 %

49.2 %

1.71 (1.28–2.30)

39.7 %

1.62 (1.19–2.20)

40.3 %

1.70 (1.25–2.32)

26.2 %

1.66 (1.18–2.33)