Table 2.

Number of the Patients in Each BLL Group Based on their Age, Gender, and Year of the Study.

	Blood lead level (µg/dl)
	<10	10–50	>=50
Gender
Male	13,399 (27.6%)	25,247 (52.0%)	9,943 (20.5%)
Female	4,970 (49.4%)	4,154 (41.3%)	929 (9.2%)
Age group(years)
<15	3,427 (57.3%)	2,056 (34.4%)	495 (8.3%)
15-30	2,286 (42.7%)	2,354 (44.0%)	711 (13.3%)
30-45	5,176 (32.0%)	7,440 (46.0%)	3,571 (22.1%)
45-60	3,856 (24.1%)	8,300 (51.9%)	3,849 (24.0%)
60-75	2,516 (22.3%)	6,900 (61.2%)	1,865 (16.5%)
>=75	1,108 (28.9%)	2,351 (61.2%)	381 (9.9%)
Years
2014	912(57.1%)	544 (34.1%)	141 (8.8%)
2015	2,295 (60.3%)	1,233 (32.4%)	275 (7.2%)
2016	5,469 (22.8%)	11,138 (46.4%)	7,404 (30.8%)
2017	5,331 (28.6%)	10,900 (58.4%)	2,418 (13.0%)
2018	4,362 (41.2%)	5,586 (52.8%)	634 (6.0%)