Consumption of Lutein and Zeaxanthin and Its Relation to the Level of Macular Pigment Optical Density in Thai Subjects

Table 1

Participant characteristics.

Variable	Unit/categories	Mean ± SD/n (%)
Age	Year old	50.7 ± 7.5
Gender	Female	90 (75)
	Male	30 (25)
Education	Below high school	15 (12.5)
	High school	23 (19.2)
	University	82 (68.3)
Marital status	Married	72 (60)
	Single	48 (40)
Income	<THB25,000/month	39 (32.5)
	THB25,000–50,000/month	27 (22.5)
	>THB 50,000/month	54 (45)
Residence	Bangkok	79 (65.8)
	Vicinity areas	41 (34.2)

Data presented as mean ± SD or frequency and percentage. n = Number of participants, THB = Thai Baht, Bangkok = the capital of Thailand, vicinity areas = Nakhon Pathom, Pathum Thani, Nonthaburi, Samut Prakan, and Samut Sakhon.