Value

Type of household

Total cases (%)

Mongolian traditional ger

Dwelling

Total household

29 (34.1%)

56 (65.9%)

85 (100%)

Type of stove, X² = 53.6, p = 0.0001

Wall chimney stove

-

20 (35.7%)

20 (23.5%)

Traditional wall chimney stove

-

15 (26.8%)

15 (17.6%)

Heat-only boiler

-

6 (10.7%)

6 (7.1%)

Traditional stove

18 (62.1%)

7 (12.5%)

25 (29.4%)

Improved stove

11 (37.9%)

8 (14.3%)

19 (22.4%)

Chimney cleaning, X² = 11.5, p = 0.003

Unknown

7 (24.1%)

1 (1.8%)

8 (9.4%)

Cleaned

17 (58.6%)

38 (67.9%)

55 (64.7%)

Uncleaned

5 (17.2%)

17 (30.4%)

22 (25.9%)

Chimney cleaning time, X² = 13.09, p = 0.01

One month ago,

8 (27.6%)

20 (35.7%)

28 (32.9%)

Two months ago,

4 (13.8%)

4 (7.1%)

8 (9.4%)

Over three months ago

5 (17.2%)

14 (25.0%)

19 (22.4%)

Uncleaned

4 (13.8%)

17 (30.4%)

21 (24.7%)

Unknown

7 (24.1%)

1 (1.8%)

8 (9,4%)

Chimney valve, X² = 67, p = 0.15

Closed

6 (20.7%)

9 (16.1%)

15 (17.6%)

Opened

9 (31.0%)

15 (26.8%)

24 (28.2%)

No valve

3 (10.3%)

18 (32.1%)

21 (24.7%)

Half

4 (13.8%)

8 (14.3%)

12 (14.1%)

Unknown

7 (24.1%)

6 (10.7%)

13 (15.3%)

Frequency of use of upgraded briquette, X² = 2.5, p = 0.29

First time

13 (44.8%)

28 (50.0%)

41 (48.2%)

Used for the second time

10 (34.5%)

11 (19.6%)

21 (24.7%)

More than three times

6 (20.7%)

17 (30.4%)

23 (27.1%)

Average amount of upgraded briquette consumed at one time, X² = 1.5, p = 0.15

50 or less

17 (58.6%)

25 (44.6%)

42 (49.4%)

51 pieces and more

12 (41.4%)

31 (55.4%)

43 (50.6%)