. 2023 Mar;16(3):419–427. doi: 10.25122/jml-2022-0284

Table 6.

Individual and environmental risk factors associated with chronic bronchitis.

Possible risk factors	Rating	Group		OR (CI 95%)	Chi-square (χ²) P-value
Possible risk factors	Rating	Study	Control	OR (CI 95%)	Chi-square (χ²) P-value
BMI	Abnormal weight	27	54	1.47	χ²=1.775^a P. 0.183 F. 0.243 NS
BMI	Normal weight	12	41	1.47	χ²=1.775^a P. 0.183 F. 0.243 NS
Respiratory sensitivity	Yes	33	28	6.58	χ²=33.900^a P. 0.000 F. 0.000 HS
Respiratory sensitivity	No	6	67	6.58	χ²=33.900^a P. 0.000 F. 0.000 HS
Dust sensitivity	Yes	34	39	5.68	χ²=23.722^a P. 0.000 F. 0.000 HS
Dust sensitivity	No	5	56	5.68	χ²=23.722^a P. 0.000 F. 0.000 HS
Spring sensitivity and breath	Yes	25	21	3.42	χ²=21.632^a P. 0.000 F. 0.000 HS
Spring sensitivity and breath	No	14	74	3.42	χ²=21.632^a P. 0.000 F. 0.000 HS
Hay fever	Yes	26	8	5.88	χ²=49.538^a P. 0.000 F. 0.000 HS
Hay fever	No	13	87	5.88	χ²=49.538^a P. 0.000 F. 0.000 HS

OR. in (CI 95%) – Odd Ratio at Confidence Interval (95%); χ² – Chi-Square Value, P. – P-value of Pearson Chi-Square; F. – P-value for Fisher exact; HS. – Highly Significant; NS. – Non-Significant.