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

Table 7.

Clinical risk factors associated with chronic bronchitis.

Risk factors	Rating	Group		OR (CI 95%)	Chi-square (χ²), P-value
Risk factors	Rating	Study	Control	OR (CI 95%)	Chi-square (χ²), P-value
Asthma	Yes	25	25	3.00	χ²=16.878^a P. 0.000 F. 0.000 HS
Asthma	No	14	70	3.00	χ²=16.878^a P. 0.000 F. 0.000 HS
Pulmonary obstruction	Yes	12	2	3.81	χ²=24.280^a P. 0.000 F. 0.000 HS
Pulmonary obstruction	No	27	93	3.81	χ²=24.280^a P. 0.000 F. 0.000 HS
Pneumonia	Yes	19	8	3.76	χ²=27.905^a P. 0.000 F. 0.000 HS
Pneumonia	No	20	87	3.76	χ²=27.905^a P. 0.000 F. 0.000 HS
Pertussis	Yes	6	1	3.30	χ²=11.471^a P. 0.001 F. 0.002 HS
Pertussis	No	33	94	3.30	χ²=11.471^a P. 0.001 F. 0.002 HS
Family history	Yes	30	34	3.65	χ²=18.750^a P. 0.000 F. 0.000 HS
Family history	No	9	61	3.65	χ²=18.750^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.