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Table 2 Clinical and parasitological outcome of Plasmodium vivax affected patients treated with combined doses of CQ–PQ for 14 days (T14) or with an intermittent single dose (ISD)

From: Effectiveness of combined chloroquine and primaquine treatment in 14 days versus intermittent single dose regimen, in an open, non-randomized, clinical trial, to eliminate Plasmodium vivax in southern Mexico

N

Days (mean/SD)

57e

(2/0)

59e

(3/0.15)

54

(7.2/0.74)

54

(14.6/1.1)

56

(21.4/1.2)

60

(29.8/2.9)

Single dose

 Clinical outcome (% with symptoms)

  Fever

10.17

3.70

1.8

0

0

0

  Headache

30.51

16.67

3.7

5.3

3.3

0

  Mialgias

1.69

3.39

0

0

0

0

  Arthralgias

0

0

0

0

0

0

  Blisters

5.08

6.78

7.41

3.7

1.8

0

  Erythema/pruritus

10.17

8.47

1.85

0

0

0

  Light jaundice

11.86

13.56*

11.11*

9.2*

3.6

0

 Asexual parasitaemia by microscopy

  Positivity: n, %a

14, 23.7

3, 5.0

0

0

0

2, 3.4

 p/µlb: median (IQR)c

62 (68)

157.7 (59.1)

223 (163)

% PCR positived

41.3

12.7

0

0

0

3.4

N

Days (mean/SD)

81

(2)

75

(3)

63

(7)

49

(14)

44

(21.5/1.1)

44

(29/2.5)

14-day (T14)

 Clinical outcome (% with symptoms)

  Fever

2.67

3.17

0

0

0

0

  Headache

25.33

7.94

0

2.2

0

0

  Mialgias

2.47

4.0

0

0

0

0

  Arthralgias

1.23

1.33

0

0

0

0

  Blisters

3.70

4.0

3.17

0

0

0

  Erythema/pruritus

7.41

9.33

6.35

4.1

0

0

  Light jaundice

23.46

32.0*

36.5*

40.8*

13.6

2.2

 Asexual parasitaemia by microscopy

  Positivity: n, %a

13, 16

4, 5.1

0

0

0

0

  p/µlb: median (IQR)c

118 (180)

42.4 (43.0)

  % PCR positived

34.1

8.75

0

0

0

0

  1. N number of patients
  2. * Statistical differences were detected on days 3 (p = 0.004), 7 (p = 0.007) and 14 (p = 0.002) in both treatment groups (Fisher exact test, α = 0.05)
  3.  As indicated by the patients, this symptom was present between visits
  4. an and %, number and percent of samples with asexual parasites
  5. bNumber of asexual parasites per microlitre of blood
  6. cOnly positive samples were included
  7. dPercent of samples positive by molecular analysis
  8. ePatients sampled on day 2 were not sampled on day 3 and vice versa