Table 3 Egg reduction rates (ERR) by species and follow-up

From: Efficacy of two rounds of albendazole treatment on soil-transmitted helminths in schoolchildren, Yunnan Province, China

Species

Time

Positive

Arithmetic mean EPG

Arithmetic mean EPG in positives

ERR (%) (95% CI)

ERR (%) (95% CI) in positives

A. lumbricoides

BL

202

18,448

18,448

-

-

FU1

200

141

1885

99.2 (97.0, 99.8)

91.6 (64.1, 98.0)

FU2

175

67

5899

99.6 (97.4, 99.9)

55.8 (−443, 96.4)

Hookworm

BL

133

779

779

-

-

FU1

130

94

256

87.9 (48.0, 97.2)

76.2 (−2.7, 94.5)

FU2

116

2

23

99.8 (99.5, 99.9)

97.5 (95.3, 98.6)

T. trichiura

BL

277

1899

1899

-

-

FU1

272

1113

1174

41.4 (26.7, 53.2)

41.6 (26.9, 53.4)

FU2

238

493

526

74.1 (67.3, 79.4)

74.8 (68.2, 80.0)

  1. EPG egg counts per gram, BL baseline, FU1 follow-up 1, FU2 follow-up 2.