## Table 3 |
|||||||

Patient data: factor extraction decision^{¥} |
|||||||

Components |
Eigen value |
Total variance (%) |
Extraction criteria |
Decision to extract |
|||

PA random eigen value (SD) |
Kaiser |
Scree test |
|||||

Felt stigma | |||||||

1 | 9.23 | 61.5 | 1.59 (0.07) | Yes | Yes | Yes | Yes |

2 | 1.03 | 6.9 | 1.45 (0.05) | No | Yes | No | No |

3 | 0.81 | 5.0 | 1.34 (0.04) | No | No | No | No |

Enacted stigma | |||||||

1 | 10.7 | 63.0 | 1.63 (0.07) | Yes | Yes | Yes | No |

2 | 1.04 | 6.1 | 1.49 (0.05) | No | Yes | No | No |

3 | 0.96 | 5.6 | 1.39 (0.04) | No | No | No | No |

^{¥} The non rotated factor analysis provided the best fit to the data; Kaiser-Meyer-Olkin
sampling adequacy equals 0.929 and 0.944 for perceived and enacted stigmas respectively;
All anti-image matrices measures of sampling adequacy (MSA) were near or greater than
0.9 for both scales; Bartlett’s test of sphericity, p < 0.001 for both scales; ‘Yes’,
indicates criteria is fulfilled, ‘No’ indicates otherwise. Kaiser recommends extracting
factors with eigen value of ≥1; Scree (Cattel’s) test recommends extracting factors
above the elbow of the scree plot. PA: parallel analysis.

Franklin * et al.*

Franklin * et al.* *BMC Public Health* 2013 **13**:298 doi:10.1186/1471-2458-13-298