The meta-analysis is used to assess the impact by comparing the average concentration of 8-OHdG in gingivitis patients with that in a healthy control group. I want to assess the heterogeneity through the Q test's p-value and I2. I can easily obtain the Forest plots. But I need a funnel plot depicting publication bias, and calculations including Egger's regression intercept, and its associated p-value. There will be mean difference on the X axis and standard error on the y axis in my funnel plot. proc format;
value std_fmt
1='Cross sectional'
2='Case control';
run;
data mydata1 ;
input Record Subgroup $3-25 StudyType N_Gin MMP_Mean_Gin MMP_Std_Gin N_Healthy MMP_Mean_Healthy MMP_Std_Healthy;
format StudyType std_fmt.;
datalines;
1 Yucel et al. 2020 1 20 609.77 174.13 23 625.74 163.1
2 Rai et al. 2008 1 18 312 301.8 15 95.2 70.2
3 Ebersole et al. 2015 2 43 199 29.1 65 130.7 14.50
4 Syndergaard et al. 2014 2 40 208.2 194.2 40 156.7 121.9
5 Bostancı et al. 2021 1 31 272.4 403.2 36 76.5 53.7
6 Zhang et al. 2021 1 24 603.2 220.7 25 435.8 180.6
;
run; run; >
... View more
