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. 2022 Mar 23;27(1):92–103. doi: 10.1007/s40688-022-00411-x

Table 2.

Sample 1 Invariance Across Grade

Model χ2 df Δχ2 Δdf RMSEA 90% RMSEA CI CFI SRMR ΔCFI ΔRMSEA ΔSRMR
CFA
  Both 10,038.69 578 — — .042 [.041, .042] .959 .042 — — —
  7th Grade 5272.16 578 — — .042 [.040, .043] .957 .043 — — —
  8th Grade 5539.35 578 — — .043 [.042, .044] .958 .043 — — —
MI Level 1
  Configural 7946.91 1056 — — .037 [.036, .038] .970 .032 — — —
  Metric 8017.91 1092 71.00 36 .037 [.036, .037] .970 .037  < .001  < .001 .005
  Scalar 8270.81 1128 252.90 36 .037 [.036, .037] .969 .041 .001  < .001 .003
MI Level 2
  Configural 10,688.72 1176 .041 [.041, .042] .958 .042 — — —
  Metric 10,784.16 1212 95.44 36 .043 [.041, .042] .958 .043  < .001 .002 .001
  Scalar 10,914.12 1224 129.96 12 .041 [.040, .042] .958 .044  < .001 .002 .001
MI Level 3
  Configural 10,994.81 1188 — — .042 [.041 .043] .957 .043 — — —
  Metric 11,091.77 1224 96.96 36 .041 [.041, .042] .957 .043  < .001 .001  < .001
  Scalar 11,172.12 1228 80.35 4 .041 [.041, .042] .957 .045  < .001  < .001 .002

CFA = Confirmatory Factor Analysis. Level 1 refers to invariance for lower-order factors. Level 2 refers to the second-order factors, and Level 3 refers to the higher-order factor