Table 4. Comparison of the difference between pre-operative and post-operative changes in nasal resistance and its improvement post-septoplasty.

Nasal resistance: Normal value: 0.15 to 0.36 Pa/cm3/sec, Mild: 0.36 to 0.47 Pa/cm3/sec, Moderate: 0.48 to 0.59 Pa/cm3/sec, Severe: > 0.59 Pa/cm3/sec [18].

A chi-square test was used for the analysis. This association of nasal resistance pre-operatively and postoperatively in types 7 and 8 is of statistical significance, with p-values of 0.0183 and 0.0067, respectively.

Types of Deviated nasal septum (DNS)	Pre-op nasal resistance (n=66)			Post-op nasal resistance (n=66)			Chi-square test	p-value
(n)	mild	Mod	severe	mild	mod	severe
Type 3 (n=11)	-	11 (100%)	-	11 (100%)	-	-	-	-
Type 4 (n=8)	-	8 (100%)	-	8 (100%)	-	-	-	-
Type 5 (n=17)	-	4 (23.5%)	13 (76.4%)	10 (58.8%)	7 (41.1%)	-	Chi2 – 23.8182	p-value < 0.001
Type 6 (n=21)	-	-	21 (100%)	9 (42.8%)	12 (57.1%)	-	Chi2- 42.0	p-value <0.001
Type 7 (n=4)	-	-	4 (100%)	3 (75%)	1 (25%)	-	Chi2- 8.0	p-value - 0.0183
Type 8 (n=5)	-	-	5 (100%)	3 (60%)	2 (40%)	-	Chi2- 10.0	p-value - 0.0067