Table 3: Model results of a four-class system; means and 95% confidence intervals. The mean score on each PROMIS-based superdomain is shown for each latent class.

ItemMean95% confidence interval

Latent Class 0 (normal)  
No biopsychosocial dysfunction
Pain42.4035.9148.89
Negative Affect49.6534.0965.21
Fatigue49.6135.9563.27
Social Function51.7439.9063.58

Latent Class 1 
Low biopsychosocial dysfunction
Pain55.6950.6960.69
Negative Affect46.7642.5750.95
Fatigue49.5743.8155.33
Social Function52.5346.3658.70

Latent Class 2  
Moderate biopsychosocial dysfunction
Pain62.6360.6164.65
Negative Affect53.1149.8256.40
Fatigue56.7754.2059.34
Social Function42.8239.7245.92

Latent Class 3  
High biopsychosocial dysfunction
Pain68.1766.4369.91
Negative Affect63.5560.6766.43
Fatigue64.3162.2366.39
Social Function35.1033.2836.92