a decreasing trendp = 0.045
The proportion of URFs declined from second to third place and showed a decreasing trend (27.7% in 2009, 18.2% in 2014 and 18.2% in 2015; χ 2 = 6.272, p = 0.045).
The proportion of URFs declined from second to third place and showed a decreasing trend (27.7% in 2009, 18.2% in 2014 and 18.2% in 2015; χ 2 = 6.272, p = 0.045).
For each HIV-1 genotype, variables marginally significant with p < 0.10 in univariate logistic analysis were further analysed with multivariate logistic regression.