Table 1.

Demographic profile of study subjects

S. No.	Study variable	Total sample	Group A	Group B	P-value
1.	Age (mean ± SD)	35.98 ± 8.62	36.69 ± 10.12	35.30 ± 7.01	0.541
2.	Education
	0= Uneducated	8	4	4	0.688
	1= Middle school	6	4	2
	2= High school	20	11	9
	3= Higher secondary	12	4	8
	4= Graduate	13	6	7
3.	Occupation
	1= Housewife	28	16	12	0.420
	2= Indoor	22	10	12
	3= Outdoor	9	3	6
4.	Melasma duration (years) (mean ± SD)	1.8 ± 2.02	1.59 ± 2.01	1.92 ± 2.05	0.467
5.	Number of pregnancies (mean ± SD)	2.82 ± 1.68	3.04 ± 2.07	2.57 ± 1.07	0.356
6.	Number of patients with sun exposure	47	21	26	0.174
7.	Duration of sun exposure (h) (mean ± SD)	1.09 ± 0.83	1.14 ± 0.77	1.06 ± 0.88	0.731
8.	Oral contraceptive pill use	8	4	4	0.959
9.	Cosmetic use	28	12	16	0.358
10.	Sunscreen use	4	1	3	0.317
11.	Family history of melasma	11	4	7	0.347