Table 1.
airflow measurements in 20 houses in Thailand, Philippines, The Gambia and Tanzania using a bed net with a mesh of 220 holes per square inch
| # | Bed net | Median airspeed outside net | Median airspeed inside net | Attenuation of airflow | Median temp†(21:00 to 6:00)0 C | Median relative humidity†(21:00 to 6:00) | |
|---|---|---|---|---|---|---|---|
|
Thailand |
1 |
On/off |
0.14 |
0.06 |
57% |
25.5 |
43% |
| |
2 |
On/off |
0.11 |
0.06 |
45% |
24.5 |
55% |
| |
3 |
On/off |
0.15 |
0.1 |
33% |
24.2 |
67% |
|
Philippines |
4 |
On/off |
0.14 |
0.06 |
57% |
25.4 |
89% |
| |
5 |
Inside/outside |
0.06 |
0.03 |
50% |
25.5 |
92% |
| |
6 |
Inside/outside |
0.08 |
0.03 |
63% |
25.9 |
92% |
| |
7 |
Inside/outside |
0.11 |
0.08 |
27% |
24.7 |
92% |
| |
8 |
Inside/outside |
0.09 |
0.03 |
67% |
25.1 |
92% |
| |
9 |
Inside/outside |
0.09 |
0.06 |
33% |
27.1 |
90% |
|
The Gambia |
10 |
Inside/outside |
0.07 |
0.02 |
71% |
26.3 |
66% |
| |
11 |
Inside/outside |
0.07 |
0.02 |
71% |
28.4 |
62% |
| |
12 |
Inside/outside |
0.09 |
0.03 |
67% |
25.1 |
58% |
| |
13 |
Inside/outside |
0.06 |
0.03 |
50% |
27.0 |
50% |
| |
14 |
Inside/outside |
0.05 |
0.03 |
40% |
28.1 |
56% |
| |
15 |
Inside/outside |
0.09 |
0.03 |
67% |
26.0 |
61% |
| |
16 |
Inside/outside |
0.09 |
0.03 |
67% |
24.3 |
57% |
|
Tanzania |
17 |
Inside/outside |
0.06 |
0.04 |
33% |
26.8 |
73% |
| |
18 |
Inside/outside |
0.12 |
0.06 |
50% |
27.7 |
69% |
| |
19 |
Inside/outside |
0.14 |
0.08 |
43% |
27.0 |
73% |
| |
20 |
Inside/outside |
0.08 |
0.02 |
75% |
28.0 |
69% |
| Overall | 0.09 | 0.04 | 50% | 26.0 | 70% |
†No significant difference in temperature or humidity was detected inside and outside the net. (Note that the measurements were not conducted during the hottest period of the year); * p-value <0.001 comparing airspeed inside and outside bed net (Mann–Whitney two-sample statistic or Wilcoxon matched-pairs signed-ranks test).