Model | Chi Square Test | Baseline comparison | Departure from saturated models | Parsimony | Conclusion | |||||
---|---|---|---|---|---|---|---|---|---|---|
χ 2 | DF | P-value (NS*) | CFI (>0.9*) | RMSEA (90% CI) (<0.05*) | p-value (NS*) | 1-PCFI | AIC | |||
Three Major Theoretical Models | M1. Correlational model (Figure 1a) | 76.4 | 66 | 0.18 NS | 0.99 | 0.02 (0–0.04). | 0.99 NS | 0.38 | 182 | Good fit |
M2. Simple model (Figure 1b) | 36.2 | 31 | 0.24 NS | 0.99 | 0.02 (0–0.04) | 0.93 NS | 0.46 | 104 | Good Fit | |
M3. Causal model (Figure 1c) | 77.0 | 69 | 0.24 NS | 0.99 | 0.02 (0–0.04) | 0.99 NS | 0.35 | 177 | Good Fit | |
Three Extended Causal Models (Revision of M3 to further investigate association between emotional symptoms and sleep problems) | M3.1. Pruned emotional symptoms causal model (Figure 2a) | 75.5 | 48 | <0.01 | 0.96 | 0.05 (0.02-0.06) | 0.64 | 0.41 | 160 | Poor Fit** |
M3.2. Emotional symptoms and sleep problems correlational model (Figure 2b) | 75.1 | 69 | 0.29 NS | 0.99 | 0.02 (0–0.04) | 0.99 NS | 0.35 | 175 | Good Fit | |
M3.3. Emotional symptoms to sleep problems causal model (Figure 2c) | 75.1 | 69 | 0.29 NS | 0.99 | 0.02 (0–0.04) | 0.99 NS | 0.35 | 175 | Good fit | |
Five Replicated Models (Using an alternative scale for functional disability) | M1 Replicate | 75.1 | 58 | 0.07 | 0.97 | 0.03 (0–0.05) | 0.93 NS | 0.38 | 167 | Good fit |
M2 Replicate | 46 | 33 | 0.06 | 0.94 | 0.04 (0–0.06) | 0.78 NS | 0.44 | 110 | Good fit | |
M3 Replicate | 89 | 71 | 0.07 | 0.97 | 0.03 (0–0.05) | 0.97 NS | 0.34 | 185 | Good fit | |
M3.2 Replicate | 89 | 71 | 0.07 | 0.97 | 0.03 (0–0.05) | 0.97 NS | 0.34 | 185 | Good fit | |
M 3.3 Replicate | 89 | 71 | 0.07 | 0.97 | 0.03 (0–0.05) | 0.97 NS | 0.34 | 185 | Good fit |