Table 6.
Measurement Invariance for the Overweight Preoccupation Subscale of the Multidimensional Body-Self Relations Questionnaire
| Invariance Model | χ2 (df) | CFI | RMSEA (90% CI) | SRMR | Δχ2 (Δdf) | ΔCFI | ΔRMSEA | ΔSRMR | Invariance? |
|---|---|---|---|---|---|---|---|---|---|
| Testing invariance by age group: 18–35 years (n = 7,590) vs. 36–55 years (n = 3,341) vs. 56–65 years (n = 689) | |||||||||
|
| |||||||||
| Configural | 371.54 (6)*** | .967 | .125 (.115,.136) | .031 | -- | -- | -- | -- | Yes |
| Metric | 411.62 (12)*** | .964 | .093 (.085, .101) | .035 | 22.17 (6)** | .003 | .032 | .004 | Yes |
| Scalar | 486.78 (18)*** | .958 | .082 (.076, .088) | .037 | 65.52 (6)*** | .006 | .011 | .002 | Yes |
|
| |||||||||
| Testing invariance by gender: men (n = 5,293) vs. women (n = 6,327) | |||||||||
|
| |||||||||
| Configural | 364.18 (4)*** | .965 | .124 (.114, .135) | .032 | -- | -- | -- | -- | Yes |
| Metric | 386.08 (7)*** | .964 | .097 (.088, .105) | .033 | 7.14 (3) | .001 | .027 | .001 | Yes |
| Scalar | 454.86 (10)*** | .957 | .088 (.081, .094) | .036 | 64.46 (3)*** | .007 | .009 | .003 | Yes |
|
| |||||||||
| Testing invariance by sexual orientation among men: heterosexual (n = 4,869) vs. bisexual (n = 194) vs. gay (n = 194) | |||||||||
|
| |||||||||
| Configural | 172.88 (6)*** | .963 | .126 (.110, .143) | .030 | -- | -- | -- | -- | Yes |
| Metric | 187.65 (12)*** | .961 | .091 (.080, .103) | .034 | 9.27 (6) | .002 | .035 | .004 | Yes |
| Scalar | 194.43 (18)*** | .961 | .075 (.065, .084) | .034 | 4.86 (6) | .000 | .016 | .000 | Yes |
|
| |||||||||
| Testing invariance by sexual orientation among women: heterosexual (n = 5,395) vs. bisexual (n = 598) vs. lesbian (n = 213) | |||||||||
|
| |||||||||
| Configural | 211.79 (6)*** | .964 | .129 (.114, .144) | .034 | -- | -- | -- | -- | Yes |
| Metric | 230.08 (12)*** | .962 | .094 (.083, .105) | .034 | 2.68 (6) | .002 | .035 | .000 | Yes |
| Scalar | 247.12 (18)*** | .960 | .078 (.070, .087) | .036 | 10.42 (6) | .002 | .016 | .002 | Yes |
|
| |||||||||
| Testing invariance by race: White (n = 8,742) vs. Black (n = 774) vs. Hispanic (n = 470) vs. Asian (n = 714) | |||||||||
|
| |||||||||
| Configural | 345.15 (8)*** | .967 | .126 (.114, .137) | .031 | -- | -- | -- | -- | Yes |
| Metric | 381.43 (17)*** | .964 | .090 (.082, .097) | .035 | 20.02 (9)* | .003 | .036 | .004 | Yes |
| Scalar | 439.21 (26)*** | .959 | .077 (.071, .083) | .038 | 49.22 (9)*** | .005 | .013 | .003 | Yes |
|
| |||||||||
| Testing invariance by weight status: Lowest BMI (n = 190) vs. Low BMI (n = 4,535) vs. Medium BMI (n = 3,632) vs. High BMI (n = 3,263) | |||||||||
|
| |||||||||
| Configural | 450.56 (8)*** | .956 | .138 (.127, .149) | .033 | -- | -- | -- | -- | Yes |
| Metric | 455.11 (17)*** | .957 | .094 (.087, .102) | .039 | 34.57 (9)*** | .001 | .044 | .006 | Yes |
| Scalar | 1,291.95 (26)*** | .875 | .129 (.123, .136) | .071 | 939.16 (9)*** | .082 | .035 | .032 | No |
Note. CFI = comparative fit index; RMSEA = root mean square error of approximation; CI = confidence interval; SRMR = standardized root-mean square residual; BMI = body mass index. Models were tested in full sample (N = 11,620).
*
p < .05,
**
p < .01,
***
p < .001.