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Table 1 Demographic, Weight and Neurocognitive Variables for Full and Included Samples

From: Cognitive insight is associated with perceived body weight in overweight and obese adults

 

Full sample: N = 314

Included sample: N = 184

Variable

N (Percentage)

N (Percentage)

Gender

Male: 97 (30.9)

Male: 47 (25.5)

Female: 217 (69.1)

Female: 137 (74.5)

**Education (highest level completed)

< Primary school: 28 (8.9)

< Primary school: 20 (10.9)

Some Secondary School: 163 (51.9)

Some Secondary School: 100 (54.3)

Completed Secondary School: 123 (39.2)

Completed Secondary School: 64 (34.8)

Marital Status #

Married/ Cohabitating: 138 (43.9)

Married/ Cohabitating: 52 (28.3)

Never Married: 119 (37.9)

Never Married: 98 (53.3)

Divorced/ Separated/

Divorced/ Separated/

Widowed: 57 (18.2)

Widowed: 34 (18.5)

Employment

Yes: 122 (38.9)

Yes: 63 (48.2)

No: 192 (61.1)

No: 121 (65.8)

Monthly Income

< R1500: 46 (14.6)

< R1500: 24 (13.6)

R1500 – R3000: 86 (27.4)

R1500 - R3000: 54 (30.5)

R3000 - R6000: 77 (24.5)

R 3000 - R6000: 49 (27.7)

R6000 – R12000: 49 (15.6)

R6000 - R12000: 24 (13.6)

> R12000: 41 (13.1)

> R12000: 26 (14.7)

Weight Perceived Correctly

Yes: 209 (66.6)

NA

No: 105 (33.4)

Underestimated Weight

Yes: 92 (29.3)

NA

No: 222 (70.7)

Overestimated Weight

Yes: 13 (4.1)

NA

No: 301 (95.9)

**Ever overweight/ obese

Yes: 141 (44.9)

Yes: 105 (57.1)

No: 173 (55.1)

No: 79 (42.9)

**Weight changes in previous year

Yes – weight increased: 69 (22)

Yes – weight increased: 49 (26.6)

Yes – weight decreased: 45 (14.3)

Yes – weight decreased: 24 (13.0)

No: 200 (63.7)

No: 111 (60.3)

**Family member overweight

Yes: 118 (37.6)

Yes: 76 (41.3)

No: 190 (60.5)

No: 108 (58.7)

**Told to maintain healthy weight by health-care professional

Yes: 119 (37.9)

Yes: 77 (41.8)

No: 195 (62.1)

No: 107 (58.2)

Variable

Mean (SD)

Mean (SD)

*Age in years #

45.82 (15.62)

49.34 (14.97)

Range: 18.06–81.12

Range: 18.25–81.12

Waist Circumference #

91.13 (15.77)

95.37 (10.47)

**Body Mass Index

29.65 (7.68)

31.37 (3.95)

Self-Reflectiveness

3.41 (5.32)

3.32 (5.65)

**Self- Certainty

9.75 (3.39)

9.65 (3.42)

*BCIS Total

13.17 (4.94)

12.97 (5. 51)

**RBANS Immediate Memory

44.58 (7.87)

44.01 (7.85)

RBANS Visuospatial

32.25 (4.64)

32.27 (4.12)

*RBANS Language

27.58 (5.67)

27.61 (4.52)

**RBANS Attention

47.39 (12.91)

46.20 (12.77)

**RBANS Delayed Recall

47.65 (7.54)

47.23 (7.43)

**RBANS Total

199.35 (29.11)

197.11 (28.44)

**Global IQ (WASI)

67.33 (15.61)

68.61 (13. 54)

RFFT Error Ratio

0.17 (0.21)

.16 (0.20)

Stroop Interference

−1.58 (7.84)

−2.40 (8.54)

*Spatial Span Backwards

6.07 (2.18)

5.92 (2.14)

Digit Span Backwards

5.29 (2.21)

5.25 (2.34)

Total Executive Function (z-score)

0.03 (2.47)

−0.04 (2.48)

Total Neurocognition (z-score)

−0.03 (3.13)

− 0.27 (3.10)

  1. Numbers may not add up to 100% due to missing values
  2. BCIS: Beck Cognitive Insight Scale, IQ: Intelligence Quotient, RBANS: Repeatable Battery for the Assessment of Neuropsychological Status, WASI: Wechsler Abbreviated Scale of Intelligence
  3. # Full and included samples differed significantly with regard to age, marital status and waist circumference
  4. *: relationship with correct perception of body weight in included sample - p ≤ 0.10
  5. **: relationship with correct perception of body weight in included sample - p ≤ 0.05