Table 6.

Ridge regression analysis results for first-aid competency scores.

Variable	β	SE	t	p-value	95% CI lower	95% CI upper
Gender	−0.0188	0.0107	−1.764	0.0778	−0.0397	0.0021
Age	−0.0174	0.0105	−1.6573	0.0976	−0.0379	0.0032
Education	0.022	0.0135	1.6285	0.1035	−0.0045	0.0485
Occupation	0.0255	0.011	2.3114	0.0209	0.0039	0.047
Willingness to volunteer	−0.0095	0.0099	−0.964	0.3352	−0.0289	0.0098
Training awareness	0.389	0.0221	17.6111	<0.001	0.3457	0.4323
Training support	0.3749	0.0252	14.8735	<0.001	0.3255	0.4244

R² = 0.6334, Adjusted R² = 0.6325, F = 677.70, p < 0.001.

β, standardized ridge regression coefficient; SE, bootstrap standard error; CI, confidence interval.