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According to results of a multiple linear regression analysis, among adolescents in the main partner group, being older and living with a partner were negatively associated with the proportion of sex acts that were protected, while using alcohol or marijuana, having positive attitudes toward condoms and perceiving that main partners would react positively toward condoms were associated with using condoms in a higher proportion of sex acts. Linear regression analysis shows that arsenic as the sole etiologic factor accounts for only 21% of the variance in the village standardized mortality ratios for bladder and lung cancer. The authors conducted a univariate linear regression analysis on each of the climatological variables available (Figure 3) without taking into consideration the effects of lag period in the impact these variables had on dengue incidence. |
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