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*Confidence intervals were computed using the bootstrap percentile method with 1,000 stratified bootstrap replications
(Efron, 1981, p. 145). **The difference is statistically significant at 1%.
 Table 4 Continued from previous page

Table 4 *Confidence intervals were computed using the bootstrap percentile method with 1,000 stratified bootstrap replications (Efron, 1981, p. 145). **The difference is statistically significant at 1%. Table 4 Continued from previous page