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Table 3 Multiple linearity diagnosis of factors associated with risk discordance

From: Discordance between perceived risk and actual risky sexual behaviors among undergraduate university students in mainland China: a cross-sectional study

  Tolerance VIF
X1: gender 0.97 1.03
X2: Sexual orientation 0.99 1.01
X3: Major 0.95 1.06
X4: Grade 0.98 1.02
X5: Age at first sex 0.95 1.05
X6: HIV-related knowledge 0.90 1.11
X7: HIV-related stigma 0.91 1.10
X8: Testing history 0.98 1.02
X9: Self-efficacy of condom use 0.93 1.08
X10: Monthly expenditure 0.96 1.04
X11: Residential areas 0.96 1.04
X12: Knowledge of local AIDS organization 0.93 1.08
X11: Awareness of the national AIDS policy 0.88 1.13