Table 2 Test group 2 particle gradient compared to background after a single actuation of BDP-HFA PMDI: decrease in submicrometric and increase in larger particle number in the presence of ETS.

Test # 7

23419 ± 173

908 ± 18

100 ± 5

9 ± 5

2 ± 1

0 ± 1

Test # 8

25245 ± 210

906 ± 20

80 ± 5

7 ± 2

2 ± 2

1 ± 1

Test # 9

24617 ± 280

903 ± 31

80 ± 6

9 ± 4

2 ± 2

1 ± 1

Test # 10

23092 ± 179

858 ± 19

98 ± 5

13 ± 4

2 ± 2

2 ± 2

Pooled data of 4 tests

24093 ± 211

894 ± 22

89 ± 5

10 ± 4

2 ± 2

1 ± 1

ETS

Test # 11

-2633 ± 196

1574 ± 41

140 ± 9

11 ± 3

2 ± 2

0 ± 1

Test # 12

-2623 ± 206

1505 ± 50

136 ± 10

10 ± 3

1 ± 1

1 ± 1

Test # 13

-2180 ± 161

1604 ± 44

127 ± 8

16 ± 5

3 ± 2

3 ± 2

Test# 14

-2212 ± 189

1751 ± 49

151 ± 8

7 ± 4

2 ± 2

1 ± 1

Pooled data of 4 tests

-2412 ± 188*

1609 ± 46*

139 ± 9*

11 ± 4

2 ± 2

1 ± 2