. Author manuscript; available in PMC: 2014 Sep 2.

Published in final edited form as: Physiol Behav. 2011 Sep 17;105(2):560–567. doi: 10.1016/j.physbeh.2011.09.008

Table 1.

Characteristics of 10 female monozygotic twin pairs discordant for restrained eating based on Restraint Scale scores.

	Restrained Mean (SD)	Unrestrained Mean (SD)	P value^*
Age, years	31 (16)	31 (16)	–
Restraint Scale score	18 (2)	10 (2)	<0.0001
Body mass index, kg/m²	23.6 (4)	24.3 (3)	0.1
Weight, kg	65.0 (10.8)	66.4 (8.3)	0.3
Height, cm	166.5 (6.3)	165.1 (6.7)	<0.05
Lifetime maximum weight, kg	68.3 (10.2)	68.6 (6.7)	0.7
TFEQ-R18 subscale scores^†
Emotional eating	35 (34)	21 (20)	0.07
Uncontrolled eating	33 (16)	20 (8)	<0.05
Percent correct on behavioral post-test pre-milkshake	90 (6)	90 (4)	0.9
Percent correct on behavioral post-test post-milkshake	90 (7)	90 (5)	0.8
Post-milkshake appeal rating for fattening food	4.6 (1.2)	4.5 (1.7)	0.9
Post-milkshake appeal rating for non-fattening food	6.6 (0.6)	6.0 (1.8)	0.3
Amount of ice cream eaten after a milkshake, kcals	188 (39)	225 (45)	0.4
Time elapsed between breakfast and fMRI, min^†	203 (74)	194 (32)	0.7

P values based on paired t-tests.

^†

Data available for 9 pairs. TFEQ-R18=Three Factor Eating Questionnaire-Revised 18-item.