-------------------------------------------------------- name: log: C:\Users\Professor\Desktop\Aula15_09.log log type: text opened on: 15 Sep 2022, 16:59:11 . sum Variable | Obs Mean Std. Dev. > Min Max -------------+------------------------------------------ > --------------- patient | 240 60.5 34.71221 > 1 120 sex | 240 .5 .5010449 > 0 1 agegrp | 240 2 .8182029 > 1 3 when | 240 1.5 .5010449 > 1 2 bp | 240 153.9042 13.0837 > 125 185 . sum Variable | Obs Mean Std. Dev. > Min Max -------------+------------------------------------------ > --------------- patient | 240 60.5 34.71221 > 1 120 sex | 240 .5 .5010449 > 0 1 agegrp | 240 2 .8182029 > 1 3 when | 240 1.5 .5010449 > 1 2 bp | 240 153.9042 13.0837 > 125 185 . sum bp Variable | Obs Mean Std. Dev. > Min Max -------------+------------------------------------------ > --------------- bp | 240 153.9042 13.0837 > 125 185 . egen time=group(when) . egen idade=group(agegrp) . tabulate time, sum(bp) | Summary of Blood pressure group(when) | Mean Std. Dev. Freq. ------------+------------------------------------ 1 | 156.45 11.389845 120 2 | 151.35833 14.177622 120 ------------+------------------------------------ Total | 153.90417 13.083702 240 . tabulate time if idade==1, sum(bp) | Summary of Blood pressure group(when) | Mean Std. Dev. Freq. ------------+------------------------------------ 1 | 151.675 9.2580872 40 2 | 144.325 11.893518 40 ------------+------------------------------------ Total | 148 11.217076 80 . gen bp_before=bp if time==1 (120 missing values generated) . gen bp_after=bp if time==2 (120 missing values generated) . tab sex agegrp, sum( bp_before) Means, Standard Deviations and Frequencies of bp_b > efore | Age Group Sex | 30-45 46-59 60+ | Total -----------+---------------------------------+---------- Male | 153.45 159.05 165.3 | 159.26667 | 9.9550305 12.377718 8.8442667 | 11.413442 | 20 20 20 | 60 -----------+---------------------------------+---------- Female | 149.9 151.15 159.85 | 153.63333 | 8.378544 9.1379774 11.930831 | 10.7356 | 20 20 20 | 60 -----------+---------------------------------+---------- Total | 151.675 155.1 162.575 | 156.45 | 9.2580872 11.459628 10.727122 | 11.389845 | 40 40 40 | 120 . sum bp_before bp_after Variable | Obs Mean Std. Dev. Min > Max -------------+---------------------------------------------- > ----------- bp_before | 120 156.45 11.38985 138 > 185 bp_after | 120 151.3583 14.17762 125 > 185 . twoway (scatter bp agegrp) . display (156.45-151.3583)/( 11.38985 ^2/120+14.17762^2/12 > 0)^0.5 3.0670035 . *** z=3.067 . *** z<1.96 => rejeitar H0 . log close name: log: C:\Users\Professor\Desktop\Aula15_09.log log type: text closed on: 15 Sep 2022, 16:59:59 ------------------------------------------------------------