The phrase "as comparison group" is not correct in English; it should be "as a comparison group." You can use it when referring to a group that is used as a standard of comparison in research or analysis.
Example: "In this study, we will analyze the results of the experimental group as a comparison group to evaluate the effectiveness of the new treatment."
Alternatives: "as a control group" or "as a reference group."
Four study designs were employed: (1) A simple before after study; (2) A before after study using the rest of Oslo as comparison group; (3) A before after study based on accident rates; (4) An empirical Bayes before after study.
In comparison with the Danish background population included as comparison group in the present study, the women with BD did not have a significantly higher prevalence of sexual dysfunction but they reported sexual distress more often.
However, most of the previously reported controlled intervention trials used "usual care" as comparison group.
‡As in previous tables sensitivity groups are compared with sensitive group given antibiotics as comparison group.
A Randomized Controlled Trial, submitted], and one study was a head-to-head trial with donepezil as comparison group [ 35].
As comparison group, 103 healthy subjects matched for age, gender and smoking status (smoker: yes/no) were recruited by public announcements and gave written informed consent.
In order to overcome limitations, future researchers are advised to use standardized and objective measurements of sleep, follow-up or longitudinal designs, representative population samples, large sample sizes, adequate comparison groups, as well as comparison groups with other trauma experiences.
We also do a difference-in-difference-in-difference analysis in which we also use non-veterans (disabled non-veterans and unemployed non-veterans) as comparison groups.
Mortality was analyzed in a time-to-event analysis in a Cox proportional hazards model using patients with and without the del/del genotype as comparison groups.
As comparison groups, we included DM2 and healthy subjects.
Previous exercise RCT used typically usual care as comparison groups.
