. 2016 Nov 4;10:2261–2270. doi: 10.2147/PPA.S112639

Table 2.

Mediation effects of BID and SN on BMI–QoL relationship by gender and after adjustment for covariates

Mediator	Effect^c			Effect size
Mediator	Total (95% CI)	Direct (95% CI)	Indirect (boot 95% CI)	Completely standardized indirect effect (95% CI)
SN
PHY-QoL
Men	−0.15 (−0.18 to −0.11)^**	−0.15 (−0.19 to −0.12)^**	0.0032 (−0.006 to 0.0092)	0.0058 (−0.0012 to 0.017)
Women	−0.14 (−0.16 to −0.12)^**	−0.14 (−0.16 to −0.12)^**	0.0059 (0.0026 to 0.010)	0.012 (0.0053 to 0.021)
PSY/SOC-QoL
Men	−0.044 (−0.074 to −0.014)^*	−0.051 (−0.080 to −0.023)^*	0.0074 (−0.0022 to 0.018)	0.016 (−0.0048 to 0.038)
Women	−0.080 (−0.097 to −0.063)^**	−0.092 (−0.11 to −0.077)^**	0.012 (0.0056 to 0.020)	0.030 (0.014 to 0.048)
TOT-QoL
Men	−0.20 (−0.26 to −0.15)^**	−0.21 (−0.27 to −0.16)^**	0.011 (−0.0037 to 0.027)	0.013 (−0.0039 to 0.031)
Women	−0.22 (−0.26 to −0.19)^**	−0.24 (−0.27 to −0.21)^**	0.019 (0.0088 to 0.030)	0.024 (0.011 to 0.039)
BID
PHY-QoL
Men	−0.15 (−0.18 to −0.11)^**	−0.26 (−0.31 to −0.21)^**	0.11 (0.064 to 0.16)	0.20 (0.12 to 0.29)
Women	−0.14 (−0.16 to −0.12)^**	−0.19 (−0.22 to −0.16)^**	0.054 (0.037 to 0.071)	0.11 (0.076 to 0.15)
PSY/SOC-QoL
Men	−0.044 (−0.074 to −0.014)^*	−0.15 (−0.19 to −0.10)^**	0.10 (0.071 to 0.14)	0.22 (0.15 to 0.30)
Women	−0.080 (−0.097 to −0.063)^**	−0.14 (−0.17 to −0.12)^**	0.064 (0.051 to 0.078)	0.16 (0.13 to 0.20)
TOT-QoL
Men	−0.20 (−0.26 to −0.15)^**	−0.43 (−0.51 to −0.35)^**	0.23 (0.16 to 0.30)	0.27 (0.19 to 0.35)
Women	−0.22 (−0.26 to −0.19)^**	−0.35 (−0.39 to −0.31)^**	0.13 (0.10 to 0.16)	0.17 (0.13 to 0.20)
SN + BID
PHY-QoL
Men	−0.15 (−0.18 to −0.11)^**	−0.25 (−0.31 to −0.20)^**	0.0009 (−0.0002 to 0.0027)^a 0.033 (0.019 to 0.048)^b	0.0049 (−0.0010 to 0.015)^a 0.19 (0.11 to 0.28)^b
Women	−0.14 (−0.16 to −0.12)^**	−0.19 (−0.22 to −0.17)^**	0.0016 (0.0007 to 0.0029)^a 0.015 (0.010 to 0.020)^b	0.011 (0.0047 to 0.019)^a 0.10 (0.066 to 0.14)^b
PSY/SOC-QoL
Men	−0.044 (−0.074 to −0.014)^*	−0.14 (−0.18 to −0.10)^**	0.0070 (−0.0021 to 0.017)^a 0.089 (0.054 to 0.13)^b	0.015 (−0.0050 to 0.036)^a 0.19 (0.12 to 0.27)^b
Women	−0.080 (−0.097 to −0.063)^**	−0.15 (−0.16 to −0.13)^**	0.012 (0.0050 to 0.018) 0.054 (0.041 to 0.067)^b	0.029 (0.012 to 0.045)^a 0.13 (0.10 to 0.17)^b
TOT-QoL
Men	−0.20 (−0.26 to −0.15)^**	−0.42 (−0.50 to −0.34)^**	0.010 (−0.0031 to 0.025)^a 0.21 (0.14 to 0.28)^b	0.012 (−0.0037 to 0.029)^a 0.24 (0.16 to 0.32)^b
Women	−0.22 (−0.26 to −0.19)^**	−0.35 (−0.39 to −0.32)^**	0.018 (0.0079 to 0.029)^a 0.11 (0.087 to 0.14)^b	0.023 (0.010 to 0.036)^a 0.15 (0.11 to 0.18)^b

Notes:

P<0.05,

^**

P<0.0001.

Mediated effect of SN.

Mediated effect of BID.

Mediation effect was tested using the approach of product of coefficients.²³

Abbreviations: BID, body image distortion; BMI, body mass index; CI, confidence interval; PHY-QoL, physical dimension of QoL score; PSY/SOC-QoL, psychosocial dimension of QoL score; QoL, quality of life; SN, subjective norm; TOT-QoL, total score of quality of life questionnaire.