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Table 5 Primary reason for early discontinuation among all randomized study participants by study

From: Summary of anti-malarial prophylactic efficacy of tafenoquine from three placebo-controlled studies of residents of malaria-endemic countries

Study

Treatment

Total early withdrawal

Adverse experience

Insufficient therapeutic effecta

Protocol deviation

Lost to follow-up

Movedb

Other or unknown

030

Placebo

100

0

93 (93.0 %)

2 (2.0 %)

3 (3.0 %)

NR

2 (2.0 %)

TQ 200-mg weekly

97

2 (2.1 %)

88 (90.7 %)

1 (1.0 %)

3 (3.1 %)

NR

3 (3.1 %)

MQ 250-mg weekly

97

1 (1.0 %)

89 (91.8 %)

3 (3.1 %)

1 (1.0 %)

NR

3 (3.1 %)

Total

294

3 (1.0 %)

270 (91.8 %)

6 (2.0 %)

7 (2.4 %)

NR

8 (2.7 %)

043

Placebo

27

0

22 (81.5 %)

1 (3.7 %)

4 (14.8 %)

NR

0

TQ 400-mg load only

18

1 (5.6 %)

5 (27.8 %)

2 (11.1 %)

9 (50.0 %)

NR

1 (5.6 %)

TQ 200-mg weekly

13

1 (7.7 %)

1 (7.7 %)

8 (61.5 %)

3 (23.1 %)

NR

0

TQ 400-mg weekly

10

0

0

6 (60.0 %)

4 (40.0 %)

NR

0

Total

68

2 (2.9 %)

28 (41.2 %)

17 (25.0 %)

20 (29.4 %)

NR

1 (1.5 %)

045

Placebo

72

NR

62 (86.1 %)

NR

NR

NR

10 (13.9 %)

TQ 25-mg weekly

35

NR

26 (74.3 %)

NR

NR

NR

9 (25.7 %)

TQ 50-mg weekly

16

NR

2 (12.5 %)

NR

NR

NR

14 (87.5 %)

TQ 100-mg weekly

8

NR

0

NR

NR

NR

8 (100.0 %)

TQ 200-mg weekly

18

NR

1 (5.6 %)

NR

NR

NR

17 (94.4 %)

MQ 250-mg weekly

4

NR

0

NR

NR

NR

4 (100.0 %)

Total

153

NR

91 (59.5 %)

NR

NR

NR

62 (40.5 %)

  1. The percentage for each reason is based on the total number of subjects withdrawing early in each treatment group
  2. TQ tafenoquine, MQ mefloquine, NR information not reported in the original studies
  3. aInsufficient therapeutic effect or confirmed parasitemia
  4. bMoved outside of endemic area with no reported malaria infection