Blood Lead Levels and Health Problems of Lead Acid Battery Workers in Bangladesh

Table 6

Predictions of blood lead concentration.

Variables in the model	Blood lead concentration					Constant
	𝑅^2 (%)	𝐹	𝑃	Beta coefficient
				Unstandardized	Standardized
Exposure category	24.4	38.806	<0.001	−32.425	−0.501	104.549
Duration of work shift	7.1	9.915	0.002	5.329	0.281	16.843
Regular bathing at end of the day	5.0	7.190	0.008	−13.682	−0.242	83.344
Exposure category +; duration of work shift	27.9	23.588	<0.001	−30.246	−0.467	66.829
Exposure category +; regular bathing at end of the day	27.8	23.518	<0.001	3.861	0.203	118.150
				−31.306	−0.483
Duration of work shift +; regular bathing at end of the day	18.4	14.199	<0.001	−11.314	−0.200	24.645
				7.464	0.393
Exposure category +; duration of work shift +; regular bathing at end of the day	35.3	22.292	<0.001	−20.572	−0.363	68.72
				−27.508	−0.425
				5.749	0.303
				−16.907	−0.299