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Table 5 Descriptive statistics and reliability of items of the PRHS (N = 917)

From: Psychometric properties of the European Portuguese version of the Perceived Risk of HIV Scale in the general population and HIV-uninfected partners from sero-different couples

PRHS items Range M (SD) Floor (%) Ceiling (%) S K Corrected item-total correlation Cronbach’s alpha if item deleted
1. What is your gut feeling about how likely you are to get infected with HIV? (Extremely unlikely to Extremely likely) [A] 1–5 1.73b (0.76) 43.5 0.7 0.94 1.21 .55 .76
2. I worry about getting infected with HIV (None of the time to All of the time) [A] 1–6 2.45b (1.23) 20.1 3.1 1.05 0.68 .45 .77
3. Picturing self getting HIV is something I find: (Very hard to do to Very easy to do) [S] 1–4 1.58b (0.70) 52.7 1.5 1.06 0.83 .55 .76
4. I am sure I will NOT get infected with HIV (Strongly disagree to Strongly agree) ª [C] 1–6 3.56 (1.53) 10.4 9.3 −0.13 −1.15 .44 .78
5. I feel vulnerable to HIV infection (Strongly disagree to Strongly agree) [A] 1–6 2.34b (1.25) 29.3 0.9 0.77 −0.30 .61 .74
6. There is a chance, no matter how small, I could get HIV (Strongly disagree to Strongly agree) [C] 1–6 3.84c (1.58) 10.9 13.3 −0.44 −0.99 .45 .78
7. I think my chances of getting infected with HIV are (Zero to Very large) [C] 1–6 2.45b (0.79) 9.7 0.2 0.30 0.76 .71 .74
8. Getting HIV is something I have (Never thought about to Thought about often) [S] 1–4 2.08b (0.75) 21.5 2.6 0.25 −0.34 .52 .76
  1. Floor (%): Percentage of participants at the lowest scale rating. Ceiling (%): Percentage of participants at the highest scale rating. S Skewness. K Kurtosis. Item type: [A] = Affective item; [S] = Salience item; [C] = Cognitive item
  2. ª Reversed item
  3. b Item mean below the scale midpoint (one-sample t test, p < .05)
  4. c Item mean above the scale midpoint (one-sample t test, p < .05)