Variable	n		p value
Sex¹
Monthly consumption frequency²			0.4719^ns
Female	240	21.4
Male	144	22.2
Consumed grams²			0.9404^ns
Female	240	158.4
Male	144	159.5
Educational level³
Monthly consumption frequency²			0.2332^ns
Basic level	149	22.6
Upper middle level	137	20.7
Upper level	94	21.2
Consumed grams²			0.0919^ns
Basic level	149	171.4
Upper middle level	137	150.7
Upper level	94	147.4
Monthly income¹
Monthly consumption frequency²			0.0002*
£Minimum salary	49	15.7
>Minimum salary	335	22.5
Consumed grams²			0.5066^ns
£Minimum salary	49	146.1
>Minimum salary	335	160.6
Occupational level³
Monthly consumption frequency²			0.0000*
Low	113	20.7
Medium	146	22.2
High	125	21.8
Consumed grams²			0.0000*
Low	113	150.5
Medium	146	172
High	125	151
Socioeconomic stratum¹
Monthly consumption frequency²			0.0308*
Local markets	190	22.8
Supermarkets	194	20.5
Consumed grams²			0.5941^ns
Local markets	190	162.5
Supermarkets	194	155.2