Table 6

Adherence to interventions in index patients and household contacts by intervention group and study season

Variables

Index

Contacts


Mask Group

Mask & Hygiene

Group

Mask Group

Mask & Hygiene

Group


2009/

2010

2010/

2011

2009/

2010

2010/

2011

2009/

2010

2010/

2011

2009/

2010

2010/

2011


Hygiene variables


Number of hand disinfections per day - mean ± SD

NA

7.4

(6.3-8.5)*

4.1

(3.3-4.8)*

NA

8.8

(7.9-9.6)

7.5

(6.5-8.5)

Adherent to intensified hand hygiene during each of the five days after implementation of the intervention (adherence def. 2) - n/n (%)**

NA

8/17

(47)*

1/9

(9)*

NA

15/39

(38)

13/28

(46)

Hand disinfection/-washing after coming home*** - n/n (%)

7/9

(78)

7/14

(50)

10/16

(63)

6/11

(55)

11/23#

(64)

21/30#

(70)

28/32#

(88)

20/22#

(91)

Hand disinfection/-washing after touching contaminated objects*** - n/n (%)

1/11

(9)

0

3/17

(18)

1/11

(9)

11/23#

(48)

16/30#

(53)

28/32#

(88)

16/22#

(73)

Hand disinfection/-washing before eating*** - n/n (%)

8/11

(73)

6/15

(40)

13/17

(77)

6/11

(55)

23/23#

(100)

27/30#

(90)

28/32#

(88)

15/22#

(68)

Hand disinfection/-washing after coughing/sneezing*** - n/n (%)

5/11

(46)

0

9/17

(53)

3/11

(27)

17/30#

(57)

16/38#

(42)

22/38#

(58)

8/28#

(29)


Mask variables


Adherent to facemask use during each of the five days after full implementation of the intervention (adherence definition 2) - n/n (%)##

6/11

(55)

7/15

(47)

7/17

(41)

2/11

(18)

17/31

(55)

18/39

(46)

17/38

(45)

13/28

(46)

Wore facemask when being in the same room with index/contact*** - n/n (%)

8/10

(80)

8/15

(53)

13/16

(81)

6/11

(55)

23/31

(74)

32/37

(87)

26/38

(68)

24/28

(86)

Wore facemask when being in close contact to index/contact*** - n/n (%)

7/10

(70)

9/15

(60)

13/16

(81)

5/11

(46)

24/31

(77)

34/38

(90)

27/38

(71)

21/28

(75)

Wore facemask when providing care to index/being provided for by household contact*** - n/n(%)

6/9

(67)

4/5

(80)

6/12

(50)

3/7

(43)

10/16

(63)

13/16

(81)

12/21

(57)

12/13

(92)


NA not applicable, HD hand disinfection, SD standard deviation. * p < 0.05 between seasons. ** Adherence to hand hygiene measure was defined as disinfection of hands at least 5 times per day during the 5 day after full implementation of the intervention (based on data from daily questionnaire). *** based on data from exit questionnaire. #only adults. ## Adherence to facemask intervention was defined as wearing a facemask "mostly" or "always" on each of the 5 days after full implementation of the intervention (based on data from daily questionnaire)

Suess et al. BMC Infectious Diseases 2012 12:26   doi:10.1186/1471-2334-12-26

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