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Table 2 Marginal effects of multivariate logistic regression: probability of choosing LAI PrEP as preferred product

From: Determinants of heterosexual men's demand for long-acting injectable pre-exposure prophylaxis (PrEP) for HIV in urban South Africa

 

Coefficient

95% CI

P-value

Socio-demographic factors

 Age

− 0.004

− 0.018, 0.010

0.581

 Education

  Lower than high school (as reference)

–

–

–

  Finished high school

0.007

−0.248, 0.263

0.954

 Household income > R5000

0.024

−0.182, 0.231

0.818

 Have children

0.224

0.012, 0.435

0.038

Risk Profile

 Tested HIV before

0.106

−0.094, 0.306

0.300

 Multiple sexual partners in the last year

0.008

−0.167, 0.183

0.930

 Condom usage

  Always

0.073

−0.109, 0.255

0.433

  Inconsistent (as reference)

–

–

–

 Ever had UAI

−0.420

−0.574, − 0.265

0.000

 Score for risk attitude (scale 1 = risk-averse; scale 10 = risk-loving)

0.034

0.006, 0.063

0.017

Product Attributes

 Effectiveness

−0.293

−0.679, 0.093

0.137

 Contraception

−0.081

−0.632, 0.470

0.773

 Use frequency

−0.016

−0.506, 0.473

0.949

 STIs prevention

−0.417

−0.596, − 0.237

0.000

 Side effects

−0.316

− 0.651, 0.019

0.065

  1. UAI Unprotected anal intercourse, STIs Sexually transmitted infections