Table 2.

Weight Estimation according to socio-demographic variables, BMI distribution and LTPA^a,b,c

	Underestimation	Correct	Overestimation	Don’t’ know/Don’t answer	P
Men (n = 451)	20.6	60.5	6.0	12.9
Age (years)
18–35	18.1	60.4	7.4	14.1	0.032
36–55	27.2	60.8	2.4	9.6
Origin
Balearic Islands	19.8	61.4	5.9	12.9	0.218
Regions of Spain	24.7	61.8	7.9	5.6
South America	18.5	48.1	7.4	12.7
Other countries	22.2	55.6	0.0	22.2
Educational level
Low	20.7	51.7	13.8	13.8	0.296
Medium	18.9	59.8	6.3	15.0
High	23.2	62.8	4.3	9.8
Professional profile
Student	13.2	52.1	9.9	24.8	<0.001
Unemployed	26.9	57.7	3.8	11.5
Employed	23.3	64.5	4.4	7.8
BMI (kg/m2)
Normal-weight	9.9	69.8	7.3	12.9	<0.001
Overweight	28.4	53.1	4.9	13.6
Obesity	45.3	41.5	1.9	11.3
LTPA
Yes	18.8	63.6	6.7	10.9	0.073
No	23.8	54.6	3.8	17.7
Women (n = 630)	17.5	63.0	4.1	15.4
Age (years)
18–35	14.0	64.6	5.6	15.9	0.009
36–55	22.6	60.7	2.0	14.7
Origin
Balearic Islands	16.4	64.2	3.9	15.6	0.186
Regions of Spain	19.8	64.9	2.3	13.0
South America	14.9	59.7	4.5	20.9
Other countries	30.4	47.8	13.0	8.7
Educational level
Low	14.6	58.3	6.3	20.8	0.373
Medium	18.3	60.5	4.2	17.0
High	17.3	67.7	3.1	11.9
Professional profile
Student	12.3	59.0	4.9	23.8	0.010
Unemployed	25.0	51.8	1.8	21.4
Employed	18.4	65.3	4.3	12.0
BMI (kg/m2)
Normal-weight	11.3	70.7	4.4	13.6	<0.001
Overweight	25.6	53.2	2.6	18.6
Obesity	36.8	38.2	2.9	22.1
LTPA
Yes	18.9	66.4	2.5	12.3	0.014
No	16.3	59.0	5.9	18.9

Abbreviations: BMI body mass index, LTPA leisure-time physical activity

^aValues are expressed as percentages

^bSignificant trends between Weight Estimation groups have been evaluated by χ ²

^cSignificant trends between males and females have been evaluated by χ ²: †p < 0.05; ‡p < 0.01; §p < 0.001