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. Author manuscript; available in PMC: 2017 Jun 11.
Published in final edited form as: J Surv Stat Methodol. 2016 Oct 7;4(4):501–524. doi: 10.1093/jssam/smw021

Table 5.

Equivalence testing of the activity scale and thresholds for TEL, FTF and Web.

Model χ2 df Δχ2 p-value AIC Constraints
Configural 1251.302 153 80920 Structure;
Interviewer metric equivalence 1241.365 155 1.97 0.37 80917 Loadings: FTF & TEL;
Full metric equivalence 1224.226 157 4.17 0.12 80916 Loadings: FTF, TEL & Web;
Interviewer scalar equivalence 1226.26 166 2.45 0.98 80900 Loadings: FTF, TEL & Web, Thresholds: FTF & TEL;
Full scalar equivalence 1330.319 175 205.36 0.00 91088 Loadings: FTF, TEL & Web, Thresholds: FTF, TEL & Web;
Partial scalar equivalence 1221.83 171 4.13 0.53 80894 Loadings: FTF, TEL & Web, Part. thresholds: FTF, TEL & Web;
Threshold Interviewer Web
Mild1 0.857 1.027
Mild2 2.575 2.498
Mild3 3.636 3.949
Moderate1 1.809 1.853
Moderate2 5.856 5.972
Moderate3 9.445 11.787
Vigorous1 −1.014 −0.962
Vigorous2 −0.335 −0.252
Vigorous3 0.282 0.774