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Table 2 Crude and adjusted Odds Ratio (OR) with 95% Confidence Intervals (CI) of the effect of current asthma and other variables on reporting that the child is affected by exposure to bakhour using logistic regression analysis.

From: Home exposure to Arabian incense (bakhour) and asthma symptoms in children: a community survey in two regions in Oman

 

Number (%) of total sample

(%) affected by bakhour

Crude OR

(95% CI)

Adjusted OR# (95% CI)

Current asthma

    

   ▪ No

2065 (84.6)

43.6

1.00

1.00

   ▪ Yes

376 (15.4)

56.4

2.32 (1.84–2.93)*

2.55 (1.97–3.31)*

Bakhour use per week

    

   ▪ Never or rarely

463 (19.0)

19.7

1.00

1.00

   ▪ 1–2 times/week

549 (22.5)

22.8

1.21 (0.89–1.63)

2.28 (1.63–3.21)*

   ▪ >2 times/week

1423 (58.4)

26.6

1.48 (1.14–1.91)*

3.01 (2.23–4.06)*

Bakhour use in presence of child

    

   ▪ No

1032 (42.3)

35.1

1.00

1.00

   ▪ Yes

1409 (57.7)

16.5

0.37 (0.30–0.44)*

0.51 (0.40–0.65)*

Bakhour use in the child room

    

   ▪ No

1030 (42.2)

36.4

1.00

1.00

   ▪ Yes

1411 (57.8)

15.5

0.32 (0.27–0.38)*

0.36 (0.28–0.46)*

Gender

    

   ▪ Male

1290 (52.8)

21.9

1.00

1.00

   ▪ Female

1151 (47.2)

24.3

1.33 (1.04–1.60)*

1.31 (1.07–1.61)*

Region

    

   ▪ Muscat

1241 (50.8)

19.3

1.00

1.00

   ▪ Sharqiyah

1200 (49.2)

29.5

1.75 (1.45–2.10)*

1.31 (1.07–1.62)*

Father education

    

   ▪ No School education

973 (41.1)

30.2

1.00

1.00

   ▪ Didn't complete High School

905 (38.2)

22.8

0.68 (0.55–0.83)*

0.79 (0.62–1.00)

   ▪ Completed High School

492 (20.8)

15.4

0.42 (0.32–0.55)*

0.65 (0.45-.92)*

Mother education

    

   ▪ No School education

1328 (55.3)

27.7

1.00

1.00

   ▪ Didn't complete High School

829 (34.5)

21.6

0.72 (0.59–0.88)*

0.86 (0.67–1.10)

   ▪ Completed High School

244 (10.2)

13.9

0.42 (0.29–0.61)*

0.68 (0.43–1.07)*

Any parent smoking

    

   ▪ No

1860 (76.2)

24.4

1.00

1.00

   ▪ Yes

581 (23.8)

24.3

1.00 (0.80–1.23)

1.02 (0.80–1.31)

  1. *Statistically significant at p-value < 0.05
  2. # adjusted for all variables listed in the table.