The phrase "attrition were higher" is not correct in written English.
The subject "attrition" is singular, so it should be paired with the singular verb "was" instead of "were."
Example: "The attrition was higher than expected this quarter."
Alternatives: "attrition rates were elevated" or "attrition levels were increased."
We estimated that a sample size of 40 papers for each arm would show a difference in STRICTA scores, but attrition was higher than expected at one-third of papers and highest for the earlier time-points.
Attrition was higher in the STG (n = 81, 28.6%) than in the ACG (n = 43, 18.1%) group.
Attrition was higher in females with an important contributing factor being young women marrying out of the HDSS area.
However, if for any reason the rate of attrition is higher than normally anticipated, this may reflect a problem.
More than one-third of ART ineligible patients had poor retention in care, and the attrition was higher in those with longer follow-up periods.
However, the attrition was higher than the ones reported in recent studies from China (24%), Thailand (19%), and South Africa (21 26%) (22– 22).
Survey attrition was higher in disadvantaged families, where respondents had moved home and where consent to data linkage was not given.
Unfortunately attrition was selective; attrition was higher among persons who were depressed at baseline and who had severe psychopathology, lower cognitive functioning, and were recruited from outpatient or inpatients mental health care settings.
Because study attrition was higher in the intervention group (specifically in noncompleters of the course) relative to the control group, study attrition was not completely at random, justifying multiple imputation (20).
Probabilistic weights have been derived to compensate for differential attrition at each follow-up (e.g. attrition was higher among those from lower SES groups, persistent school truants, early school leavers and smokers).
