Table 4.

Regression analysis of the influence of neoprene hood use and hours of exposure on external auditory exostosis severity

Predictor	β	SE	Wald	df	P-value	OR	95 % CI
Neoprene hood use	−0.036	0.009	15.678	1	≤0.001	0.965	−0.055	−0.018
Exposure hours
– <600	−5.622	0.747	56.705	1	≤0.001	0.004	−7.086	−4.159
– ≥ 600 to < 1400	−4.474	0.685	42.626	1	≤0.001	0.011	−5.817	−3.131
– ≥ 1400 to < 2200	−2.608	0.619	17.726	1	≤0.001	0.074	−3.822	−1.394
– ≥ 2200 to < 3600	−2.324	0.622	13.952	1	≤0.001	0.098	−3.544	−1.105
– ≥ 3600	(Reference)

N = 129, −2 log likelihood = 250.270, chi squared = 91.632, df = 5, p ≤ .001. R²: Cox and Snell = 0.509, Nagelkerke = 0.544, McFadden = 0.259. SE = standard error; df = degrees of freedom; OR = odds ratio; CI = confidence intervals