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Table 2 Risk factors of myopia: Results of binary and multi variable logistic regression analysis

From: Housing type and myopia: the mediating role of parental myopia

Variable

n (%)

Myopia

Crude OR (95 % CI)

Adjusted a OR (95 % CI)

Parental myopia

 None

8067 (26.3)

Ref.

Ref.

 One

4279 (42.7)

2.09 (1.99–2.19) **

2.35 (2.22–2.49) **

 Both

1582 (51.0)

2.91 (2.70–3.14) **

3.57 (3.26–3.90) **

Housing type

 Flat room

2421 (24.3)

Ref.

Ref.

 1–3 floor

4440 (29.2)

1.28 (2.57–3.15) **

1.19 (1.11–1.27) **

 4–6 floor

4486 (37.2)

1.84 (1.73–1.95) **

1.34 (1.25–1.44) **

 7 floor or more

2581 (39.4)

2.02 (1.88–2.16) **

1.30 (1.20–1.42) **

Near work time (hours/day)

  ≤ 2 h

2354 (26.4)

Ref.

Ref.

 >2 h

11574 (33.2)

1.38 (1.31–1.46) **

0.96 (0.90–1.01)

Sunlight exposure time (hours/day)

  ≤ 2 h

6240 (33.1)

Ref.

Ref.

 >2 h

7688 (30.8)

0.90 (0.86–0.94)**

0.91 (0.87–0.96)**

Sufficient physical activity

 no

6062 (32.9)

Ref.

Ref.

 yes

7866 (31.0)

0.67 (0.63–0.71) **

0.98 (0.98–0.99) **

  1. **P<0.001
  2. aAdjusted for area, gender, age, living place and ethnicity