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. 2022 Apr 4;16(4):e0010307. doi: 10.1371/journal.pntd.0010307

Table 1. The egg recovery rate for Ascaris and Trichuris across five experiments.

The p-values were based on a non-parametric test (Wilcoxon rank sum test).

Experiment Ascaris Trichuris
Median egg recovery rate (%) (minimum; maximum) p-value pairwise comparison Median egg recovery rate (%) (minimum; maximum) p-value pairwise comparison
Flotation experiment (type of flotation solution)
MgSO4 (n = 8) 7.5 (0; 21.0) NaCl: 0.430
ZnSO4: 0.003
16.5 (4; 25) NaCl: 0.958
ZnSO4: 0.226
NaCl (n = 8) 10.5 (3.0; 17.0) ZnSO4: 0.009 14.0 (6; 25) ZnSO4: 0.100
ZnSO4 (n = 8) 23.5 (11.0; 32.0) 20.0 (12; 37)
Flotation experiment (period of flotation for 1st coverslip)
5 min (n = 6) 0.5 (0.0; 8.0) 10 min: 0.253
15 min: 0.157
30 min: 0.044
3.0 (0; 9) 10 min: 0.868
15 min: 0.145
30 min: 0.227
10 min (n = 6) 4.0 (0.0; 10.0) 15 min: 0.625
30 min: 0.128
2.0 (1; 10) 15 min: 0.220
30 min: 0.252
15 min (n = 6) 9.0 (0.0; 12.0) 30 min: 0.470 8.0 (1; 10) 30 min: 0.809
30 min (n = 6) 9.0 (3.0; 24.0) 6.5 (1; 24)
Flotation experiment (total period of flotation over three coverslips)
35 min (n = 6) 3.5 (0; 30) 40 min: 0.228
45 min: 0.378
30 min: 0.378
17.5 (6; 37) 40 min: 0.688
45 min: 0.423
30 min: 0.810
40 min (n = 6) 15.0 (7; 32) 45 min: 0.872
60 min: 0.936
12.0 (7; 25) 45 min: 0.747
60 min: 0.688
45 min (n = 6) 13.5 (7; 22) 60 min: 0.810 14.5 (4; 25) 60 min: 0.423
60 min (n = 6) 13.5 (6; 24) 19.0 (6; 29)
Centrifugal force experiment
1,000 g (n = 8) 28.0 (17.0; 55.0) 0.293 22.0 (10; 41) 0.753
2,000 g (n = 8) 48.0 (15.0; 55.0) 24.0 (14; 44)
Tween experiment
0% (n = 8) 48.0 (15.0; 55.0) 0.371 24.0 (14.0; 44.0) 0.010
0.05% (n = 8) 37.0 (28.0; 46.0) 39.5 (30.0; 57.0)
Volume soil experiment
1 mL (n = 12) 49.5 (13.0; 77.0) 0.665 27.5 (3; 42) 0.665
3 mL (n = 12) 51.5 (27.5; 69.0) 27.5 (6; 55)
Strainer experiment
No (n = 8) 66.5 (53.0; 80.0) 0.674 33.5 (20; 57) 0.103
Yes (n = 8) 65.5 (46.0; 78.0) 21.0 (10; 51)