Influence of the interaction between parental myopia and poor eye habits when reading and writing and poor reading posture on prevalence of myopia in school students in Urumqi, China

Table 1 Prevalence of myopia in students by sex, ethnicity, age, learning level, parental myopia, and poor reading and writing habits

Parameters	Number	Myopia	Prevalence(%)	χ²	P
Sex
Male	3404	1145	33.6	70.86	< 0.01
Female	3479	1514	43.5	70.86	< 0.01
Ethnicity
Han	3564	1889	53.0	643.85	< 0.01
Other nationalities	3319	770	23.2	643.85	< 0.01
Age (years)
7–11	3508	698	19.9	1179.06	< 0.01
12–14	2243	1157	51.6
15–20	1132	804	71.0
Learning level
Primary school	3093	530	19.9	1307.97	< 0.01
Junior high school	2475	1182	44.5
Senior high school	1315	947	72.0
Habit 1
Yes	5965	2522	42.3	251.13	< 0.01
No	918	137	14.9	251.13	< 0.01
Habit 2
Yes	5181	2271	42.8	239.14	< 0.01
No	1702	388	22.8	239.14	< 0.01
Parental myopia
Neither	4739	1402	29.6	573.69	< 0.01
Either	1762	973	55.2
Both	382	284	74.3

Habit 1: Poor eye habits when reading and writing; Habit 2: Poor reading posture

ISSN: 1471-2415