Table 2

Baseline characteristics for individuals that were lost to follow-up and individuals that were analysed, and individuals in the treatment and placebo group

Individuals lost to follow-up

(N = 840)

Individuals analysed

(N = 388)

P

Treatment Group

(N = 194)

Placebo Group

(N = 194)

P


Characteristic

Age (months)

12–23

287 (34.2%)

135 (34.8%)

0.336*

72 (37.1%)

63 (32.5%)

0.374*

24–35

187 (22.3%)

101 (26%)

46 23.7%)

55 (28.4%)

36–47

194 (23.1%)

86 (22.2%)

39 (20.1%)

47 (24.2%)

48–59

172 (20.5%)

66 (17%)

37 (19.1%)

29 (14.9%)

Sex

Male

443 (52.7%)

193 (49.7%)

0.329*

103 (53.1%)

90 (46.4%)

0.187*

Female

397 (47.3%)

195 (50.3%)

91 (46.9%)

104 (53.6%)

Village

Akinlalu

99 (11.8%)

86 (22.2%)

0.588*

43 (22.2%)

43 (22.2%)

0.562*

Ipetumodu

378 (45%)

157 (40.5%)

80 (41.2%)

77 (39.7%)

Moro

160 (19%)

59 (15.2%)

33 (17%)

26 (13.4%)

Edun-abon

203 (24.2%)

86 (22.2%)

38 (19.6%)

48 (24.7%)

Socio-economic status

Mean ± SE

6.49 ± 0.10

6.28 ± 0.06

0.077┼

6.39 ± 0.13

6.59 ± 0.15

0.324┼

Parasitic infections

Ascaris lumbricoides

409 (48.7%)

176 (45.4%)

0.277*

88 (45.4%)

88 (45.4%)

1*

Mean epg ± SE

1060.69 ± 91.70

1111 ± 149.53

0.581┼

1095.19 ± 237.48

1126.81 ± 182.39

0.777┼

Trichuris trichiura

34 (4%)

12 (3.1%)

5 (2.6%)

7 (3.6%)

0.558*

Mean epg ± SE

5.16 ± 3.07

1.70 ± 1.05

0.81 ± 0.47

2.6 ± 2.06

Hookworm

38 (4.5%)

15 (3.9%)

0.598*

5 (2.6%)

10 (5.2%)

0.188*

Mean epg ± SE

4.86 ± 1.47

3.41 ± 1.75

3.56 ± 2.91

3.26 ± 1.97

Schistosoma haematobium

7 (.8%)

7 (1.8%)

0.153§

3 (1.5%)

4 (2.1%)

Mean epg ± SE

0.02 ± 0.01

0.06 ± 0.02

0.06 ± 0.04

0.06 ± 0.03


* χ2 test

┼ t-test

§ Fisher's exact test

Kirwan et al. BMC Infectious Diseases 2009 9:20   doi:10.1186/1471-2334-9-20

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