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Table 4 Factor loadings matrix identified by exploratory factor analysis when two factors were retained. Bold font indicates variables that are grouped in each factor

From: Defining adequate contact for transmission of Mycobacterium tuberculosis in an African urban environment

Variable

Factor1 (Setting)

Factor2 (Relationship)

Nature of ventilation at usual place of meeting

0.8247

−0.10068

Frequency of sleeping in same room and bed since onset cough

0.81413

0.07244

Contact happen indoors or outdoors

0.8065

−0.05468

Frequency of shared meals since onset cough

0.76773

0.19686

Place of usual meeting. Home TB case versus Other location.

0.71749

−0.04231

Frequency and duration of contact over the past month

0.62832

0.10417

Case trusts contact

−0.20248

0.94816

Case shared TB diagnosis with contact

−0.13705

0.92354

Care was provided by the contact in the past 3 months

0.24285

0.72162

Length of knowing contact

0.21973

0.55998

How well does the case knows contact

0.38398

0.52836

Means of transportation used most often with contact. None (walking) versus a type of transportation.

0.08259

0.50289

Contact have cough

0.03227

0.15773