Table 2.
Variable descriptive statistics and factors loadings in confirmatory factor analysis
| Variable | Range | %Yes | M (SD) | Factor loading |
|---|---|---|---|---|
| Therapeutic serum levels of PrEP | 0–1 | 21 | NA | NA |
| Condomless anal intercourse | 0–1 | 55 | NA | NA |
| Autonomy support | NA | 5.38 (0.93) | NA | |
| Basic psychological needs satisfaction—PrEP Use (latent) | ||||
| PrEP use autonomous self-regulation | 5.69 (1.27) | |||
| Because I feel that I want to take responsibility for my own health | 1–7 | 5.60 (1.77) | 0.69*** | |
| Because I personally believe it is the best thing for my health | 1–7 | 5.56 (1.74) | 0.69** | |
| Because I have carefully thought about it and believe it is very important for many aspects of my life | 1–7 | 5.58 (1.72) | 0.55* | |
| Because it is an important choice I really want to make | 1–7 | 5.33(1.86) | 0.73*** | |
| Because it is consistent with my life goals | 1–7 | 6.26(1.35) | 0.78*** | |
| Because it is very important for being as healthy as possible | 1–7 | 5.79(1.68) | 0.79*** | |
| Perceived competence for PrEP use | 5.78 (1.50) | |||
| I feel confident in my ability to use PrEP daily, as recommended | 1–7 | 5.74 (1.71) | 0.79*** | |
| I am capable now of handling using PrEP daily | 1–7 | 5.84 (1.68) | 0.90*** | |
| I am able to do what it takes to ensure that I use PrEP every day | 1–7 | 5.79 (1.65) | 0.94*** | |
| I feel able to meet the challenge of using PrEP every day | 1–7 | 5.76 (0.167) | 0.85*** | |
| Basic psychological needs satisfaction—Condom Use (latent) | ||||
| Condom use autonomous self-regulation | 5.79 (1.25) | |||
| Because I would feel guilty or ashamed of myself if I did not | 1–7 | 5.58 (1.72) | 0.74*** | |
| Because I personally believe it is the best thing for my health | 1–7 | 5.95 (1.58) | 0.75*** | |
| Because I have carefully thought about it and believe it is very important for many aspects of my life | 1–7 | 5.87 (1.64) | 0.45** | |
| Because I would feel bad about myself if I did not | 1–7 | 5.74 (1.66) | 0.77*** | |
| Because it is consistent with my life goals | 1–7 | 5.65 (1.75) | 0.75** | |
| Because it is very important for being as healthy as possible | 1–7 | 6.01 (1.52) | 0.69** | |
| Perceived competence for condom use | 5.50 (1.50) | |||
| I feel confident in my ability to use condoms every time I have sex | 1–7 | 5.44 (1.78) | 0.87*** | |
| I am capable now of using condoms every time I have sex | 1–7 | 5.58 (1.75) | 0.90*** | |
| I am able to do what it takes to ensure that I use condoms whenever I have sex | 1–7 | 5.55 (1.76) | 0.87*** | |
| I feel able to meet the challenge of using condoms every time I have sex | 1–7 | 5.76 (1.67) | 0.78*** | |
The values for each SDT construct reflect the mean across all study visits starting with baseline for autonomous motivation variables and at week 4 for the remaining variables. PrEP, pre-exposure prophylaxis; SDT, self-determination theory