What is your outcome or dependent variable The variables in Table 13 7 have been examined to determine the association with length of labor TABLE 13 7 Variable Maternal age 40 Yes No (reference group) Support person present Yes No (reference group) Previous birth Variables Related to Length of Labor 12 Hours Yes No (reference group) Epidural anesthesia Yes No anesthesia or IV IM anesthesia (reference group) RR 0 87 1 00 0 43 1 00 0 21 1 00 1 20 1 00 95 CI (0 721 23) (0 310 56) (0 180 24) (1 061 34) p Value 0 23 0 03 0 01 0 02

Question: What is your outcome or dependent variable? The variables in Table 13-7 have been examined to determine the association with length of labor. TABLE 13-7

What is your outcome or dependent variable?

The variables in Table 13-7 have been examined to determine the association with length of labor. TABLE 13-7 Variable Maternal age 12 Hours Yes No (reference group) Epidural

TABLE 13-7 Variable Maternal age 12 Hours Yes No (reference group) Epidural anesthesia Yes No anesthesia or IV/IM anesthesia (reference group) RR 0.87 1.00 0.43 1.00 0.21 1.00 1.20 1.00 95% CI (0.721.23) (0.310.56) (0.180.24) (1.061.34) p-Value 0.23 0.03 0.01 0.02

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