Formaldehyde Exposure and Its Potential Health Risk in Some Beauty Salons in Kumasi Metropolis

Table 5

ANOVA.

Model		Sum of squares	df	Mean square	F	Sig.
1	Regression residual total	184931.762	6	30821.960	8.040	0.000^a
		203179.171	53	3833.569
		388110.933	59	—
2	Regression residual total	184880.7906	5	36976.181	9.825	0.000^b
		203230.1027	54	3763.519
		388110.933	59	—
3	Regression residual total	179069.936	4	44767.484	11.779	0.000^c
		209040.998	55	3800.745
		388110.933	59	—
4	Regression residual total	170715.448	3	56905.149	14.658	0.000^d
		217395.486	56	3882.062
		388110933	59	—

^aPredictors: average number of customers in a week, age of facility (beauty salon), number of services, temperature (°C), academic qualification, and years of working experience. ^bPredictors: average number of customers in a week, age of facility (beauty salon), number of services, temperature (°), and academic qualification. ^cPredictors: average number of customers in a week, age of facility (beauty salon), number of services, and temperature (°C). ^dPredictors: average number of customers in a week, age of facility (beauty salon), and number of services. ^eDependent variable: formaldehyde concentration (CL (μg/m³)).