I don't know how to compute this for question 6

You will need the following information to answer questions 5 through 8: A 2019 article in the American Journal of Public Health (AJPH)' reports the results of a randomized study designed, as per the researchers, to "assess the effect of 2-way short message service (SMS) with a nurse on postpartum contraceptive use among individual women in Kenya". The reported results include the following prose: "We randomized 260 women to 2-way SMS or control. At 6 months postpartum, 69.9% of the 130 women receiving SMS reported postpartum use of highly effective contraceptives (HEC), compared with 57.4% of the 130 women in the control arm". 5. In this the study, the estimated relative risk of HEC use at 6-months postpartum for the women in the 2-way SMS group compared to the women in the control group is approximately: RR - Prontraceprice - 1 22 blood a. -0.125 69.90 b. 0.82 p control C . 1.22 57, 4 d 0.125 57. 4 . 1 = control 69. 91- contraceptives U. baq 0. 574 6. The 95% confidence interval for the risk difference of HEC use at 6 months for the women receiving 2-way SMS messages compared to women who do not receive 2-way " za/ 1 SMS messages (controls) is (0.01, 0.24). Based on this information, and your result from question 5, which of the following is the 95% confidence interval for estimated relative risk of HEC use at 6 months for the women receiving 2-way SMS messages compared to ( 1 - 2 ) women who do not receive 2-way SMS messages (controls)? n 1 Za/2= 1. 96' C P1 - B = 0. 125 a. (0.68, 1.47) b. (0.68, 099) 10.09 10.001 64 845 c. (1.01, 1.47) 0. 11564 (1 P. - P d. (-1.01, 1.47) 0. 125 + 1. 96 (0. 059)) = 0:24 ( 6 041 1290.04 6.0.05 0. 1156 - 0. 125 - - 1.196 ( 0.059 ) = 0.01 0, 1-103 - 0: 76 Harrington E, et al. An mHealth SMS intervention on Postpartum Contraceptive Use Among Women and Couples in Kenya: A Randomized Controlled Trial. Am J Public Health. 2019;109:934-941. doi:10.2105/AJPH.2019.305051 3|Page