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Table 1 Socio-demographic characteristics of the women in samples I (study sample) and II (validation sample)

From: Validation of obesity based on self-reported data in Spanish women participants in breast cancer screening programmes

 

Sample I

Sample II

p-value

Variables

N = 1951

N = 976

 
 

n (%)

n (%)

 

Age (in years)

   

   45-49

327 (16.8)

135 (13.8)

 

   50-54

561 (28.8)

287 (29.4)

 

   55-59

537 (27.5)

287 (29.4)

 

   ≥ 60

526 (27.0)

267 (27.4)

0.2135

Self-reported BMI, mean (SD)

26.6 (4.5)

26.5 (4.6)

0.5737

   Self-reported weight

67.1 (11.8)

66.9 (11.8)

0.6656

   Self-reported height

158.8 (6.0)

158.9 (6.1)

0.6725

Measured BMI, mean (SD)

27.8 (4.9)

27.8 (4.9)

1

   Self-reported weight

68.5 (12.2)

68.4 (12.2)

0.8344

   Self-reported height

156.9 (5.8)

157.0 (6.0)

0.6638

Overweight

   

   Based on self-reported BMI

772 (39.6)

342 (35.0)

0.0194

   Based on measured BMI

831 (42.6)

412 (42.2)

0.8755

Obesity

   

   Based on self-reported BMI

387 (19.8)

206 (21.1)

0.4487

   Based on measured BMI

550 (28.2)

270 (27.7)

0.7983

Screening centre

   

   Corunna (La Coruña )

309 (15.8)

168 (17.2)

 

   Barcelona

255 (13.1)

129 (13.2)

 

   Burgos

268 (13.7)

116 (11.9)

 

   Palma de Mallorca

336 (17.2)

174 (17.8)

 

   Pamplona

237 (12.2)

114 (11.7)

 

   Zaragoza

239 (12.3)

120 (12.3)

 

   Valencia

307 (15.7)

155 (15.9)

0.8418

Town size

   

   < 200,000

867 (44.4)

430 (44.1)

 

   200,000-300,000

517 (26.5)

272 (27.9)

 

   > 300,000

567 (29.1)

274 (28.1)

0.7064

Marital status

   

   Single

111 (5.7)

63 (6.5)

 

   Married/stable couple

1541 (79.9)

779 (79.8)

 

   Separated/divorced

167 (8.6)

75 (7.7)

 

   Widow

132 (6.8)

58 (5.9)

0.5766

Menopause

   

   Pre-menopausal

436 (22.4)

204 (20.9)

 

   Post-menopausal

1515 (77.7)

772 (79.1)

0.3982

Educational level

   

   Up to junior school-leaving certificate

1347 (69.1)

671 (68.8)

 

   Senior school-leaving certificate

198 (10.2)

93 (9.5)

 

   Vocational training

185 (9.5)

96 (9.9)

 

   University

219 (11.2)

115 (11.8)

0.9141

Socio-economic level

   

   Very low/low social class

469 (24.0)

223 (22.9)

 

   Middle social class

1383 (70.9)

689 (70.6)

 

   High/very high social class

92 (4.7)

60 (6.2)

0.2268