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Table 3 Statistical measures for the single-stage and two-stage (second stage) Latent Class Analysis approaches

From: Identifying subgroups of patients using latent class analysis: should we use a single-stage or a two-stage approach? A methodological study using a cohort of patients with low back pain

 

Single-stage Latent Class Analysis

Two-stage Latent Class Analysis (second stage)

Variables, N

112

6

Identified patient subgroups, N

7

9

Subgroup size range, N

75-192 (8%-21%)

45-219 (5%-24%)

Posterior probability, median (interquartile range)

1.00 (0.99-1.00)

0.91 (0.75-0.99)

Subjects with posterior probability less than 0.70 on average per subgroup, N

4 (3%) Range: 1–7 (1%-5%)

20 (19%) Range: 3–41 (6%-32%)

Subjects with posterior probability above 0.33 for more than one subgroup, N

18 (2%)

81 (9%)