Table 2

Lifestyle and reading habits of myopic children with various 1-year progression speeds

CharacteristicsTotalParticipants with myopia in 2013 (n=3256)
Slow progression
(△SE>−0.5 D)		Moderate progression
(−1.0D<△SE≤−0.5D)		Fast progression
(△SE≤−1.0 D)
N (%)/Mean (SD)N/Mean%/SDN/Mean%/SDN/Mean%/SD
Total3256152946.9692828.5079924.54
Near work habits
Age when starting near work
 <6 years2.531 (77.73)117676.9173779.4261877.35
 ≥6 years330 (10.14)1489.68
93
10.02
89
11.14
 Unknown395 (12.13)205
13.41
98
10.56
92
11.51
Time spent on near work daily
 <2 hours1550 (47.60)73047.7446550.1135544.43
 ≥2 hours1308 (40.17)592
38.72
364
39.22
352
44.06
 Unknown398 (12.22)
207
13.54
99
10.67
92
11.51
Distance from near work
 ≥30 cm1437 (44.13)70446.0442245.4731138.92
 <30 cm1133 (34.80)483
31.59
326
35.13
324
4.55
 Unknown686 (21.07)
342
22.37
180
19.40
164
20.53
10-min rest period after 30 min of near work
 Yes1109 (34.06)52534.3432434.9126032.54
 No1265 (38.85)581
38.00
347
37.39
337
42.18
 Unknown882 (27.09)
423
27.67
257
27.69
202
25.28
Use of cellphones, computers or computer tablets in the past year
 Yes2602 (79.91)120078.4875281.0365081.35
 No268 (8.23)126
8.24
81
8.73
61
7.63
 Unknown386 (11.86)
203
13.28
95
10.24
88
11.01
Outdoor activities
Time spent participating in outdoor activities after school on weekdays
 <1 hour/day2240 (68.80)103467.6363568.4357171.46
 ≥1 hour/day587 (18.03)280
18.31
177
19.07
130
16.27
 Unknown429 (13.18)
215
14.06
116
12.50
98
12.27
Time spent participating in outdoor activities on the weekend
 <2 hours/day1813 (55.68)84955.5352456.4744055.07
 ≥2 hours/day1011 (31.05)463
30.28
285
30.71
263
32.92
 Unknown
432 (13.27)
217
14.19
119
12.82
96
12.02
Attending an after-school tutorial programme
 Yes2217 (68.09)104168.0863868.7553867.33
 No630 (19.35)280
18.31
183
19.72
167
20.90
 Unknown409 (12.56)
208
13.60
107
11.53
94
11.76
‘Cycloplegics’ use
 Yes1353 (41.55)61740.3542746.0130938.67
 No1903 (58.45)912
59.65
501
53.99
490
61.33