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Table 2 Hours spent on prescribed near activity and reported hours of occlusion treatment at the 6- and 12-week review

From: Prescribed computer games in addition to occlusion versus standard occlusion treatment for childhood amblyopia: a pilot randomised controlled trial

Compliance median (IQR)

Standard (N = 20)

Eye 5 (N = 19)

Nintendo (N = 19)

Total (N = 58)

Cumulative hours of near activity

Moderate amblyopia 0–6 wks

42 (21–48), n = 11

39 (11–43), n = 12

42 (32–54), n = 12

42 (21–48), n = 35

Severe amblyopia 0–6 wks

23 (8–39), n = 8

29 (9–42), n = 5

12 (8–18), n = 5

20 (8–40), n = 18

Moderate amblyopia 0–12 wks

77 (63–84), n = 10

76 (30–84), n = 10

79 (68–99), n = 12

79 (61–84), n = 32

Severe amblyopia 0–12 wks

49 (24–81), n = 8

70 (34–82), n = 4

24 (17–118), n = 5

54 (17–82), n = 17

Cumulative hours of occlusion

Moderate amblyopia 0–6 wks

84 (60–88), n = 11

66 (36–82), n = 12

74 (46–82), n = 12

72 (51–84), n = 35

Severe amblyopia 0–6 wks

74 (64–145), n = 8

84 (61–94), n = 5

96 (86–126), n = 5

85 (64–98), n = 18

Moderate amblyopia 0–12 wks

158 (126–180), n = 10

139 (97–164), n = 10

156 (93–168), n = 12

153 (108–168), n = 32

Severe amblyopia 0–12 wks

190 (141–292), n = 8

146 (125–159), n = 4

351 (160–432), n = 5

168 (142–351), n = 17

  1. N = total number of patients in the study arm, n = number of patients in the group with valid data (only shown when there is invalid or missing data); The prescribed numbers of hours of near activity use were 42 at 6 and 84 at 12 weeks. Children with moderate amblyopia used the prescribed near activity markedly more than children with severe amblyopia. The prescribed numbers of hours of occlusion at 6 weeks were 84 for moderate and 252 for severe amblyopia and at 12 weeks 168 and 504 h, respectively. Despite the difference in prescribed hours, effective hours reported in the diaries were similar in children with moderate and severe amblyopia
  2. IQR interquartile range