Table 1 Characteristics of patients in DATA 2 stratified by levels of screen time or sedentary time.

From: Association between ocular diseases and screen time and sedentary time derived from job-exposure matrices

 

Total

Screen time

Sedentary time

V1 (low)

V2 (middle)

V3 (high)

S1 (low)

S2 (middle)

S3 (high)

Total

N

727,589

350,245

180,418

196,926

365,881

161,029

200,679

Age

mean years ± SD

64.5 ± 12.5

66.0 ± 12.2

63.6 ± 12.6

62.6 ± 12.4

65.9 ± 12.4

63.6 ± 12.4

62.7 ± 12.4

Men

N (%)

480,161 (66.0)

236,934 (67.7)

109,163 (60.5)

134,064 (68.1)

230,532 (63.0)

110,854 (68.8)

138,775 (69.2)

Hypertension

N (%)

234,596 (32.2)

114,767 (32.8)

57,197 (31.7)

62,632 (31.8)

118,616 (32.4)

52,339 (32.5)

63,641 (31.7)

Diabetes

N (%)

101,252 (13.9)

47,927 (13.7)

25,568 (14.2)

27,757 (14.1)

48,758 (13.3)

23,985 (14.9)

28,509 (14.2)

Dyslipidemia

N (%)

83,550 (11.5)

31,264 (8.9)

23,910 (13.3)

28,376 (14.4)

33,706 (9.2)

22,870 (14.2)

26,974 (13.4)

Obesity

N (%)

89,355 (12.3)

35,712 (10.2)

24,317 (13.5)

29,326 (14.9)

37,626 (10.3)

23,400 (14.5)

28,329 (14.1)

Cardiovascular diseases

N (%)

30,772 (4.2)

17,301 (4.9)

6859 (3.8)

6612 (3.4)

17,437 (4.8)

6015 (3.7)

7320 (3.7)

Drinking, never

N (%)

239,960 (33.0)

125,386 (35.8)

60,143 (33.3)

54,431 (27.6)

135,431 (37.0)

47,270 (29.4)

57,259 (28.5)

before

N (%)

74,408 (10.2)

39,333 (11.2)

16,588 (9.2)

18,487 (9.4)

39,450 (10.8)

15,416 (9.6)

19,542 (9.7)

now

N (%)

413,221 (56.8)

185,526 (53.0)

103,687 (57.5)

124,008 (63.0)

191,000 (52.2)

98,343 (61.1)

123,878 (61.7)

Smoking, never

N (%)

303,725 (41.7)

141,230 (40.3)

81,231 (45.0)

81,264 (41.3)

157,394 (43.0)

65,313 (40.6)

81,018 (40.4)

before

N (%)

249,632 (34.3)

115,804 (33.1)

60,299 (33.4)

73,529 (37.3)

117,316 (32.1)

59,069 (36.7)

73,247 (36.5)

now

N (%)

174,232 (24.0)

93,211 (26.6)

38,888 (21.6)

42,133 (21.4)

91,171 (24.9)

36,647 (22.8)

46,414 (23.1)

  1. Abbreviation: N, number; SD,  standard deviation.
  2. Continuous variables are shown as mean ± SD. Categorical variables are shown as number (percentages).
  3. The time range for V1-V3 and S1-S3 group is “1.64 to 2.57”, “2.63 to 4.05”, “4.11 to 7.84”, “2.67 to 4.27”, “4.29 to 5.40”, and “5.45 to 8.16” hour per day respectively.
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