The phrase "approaches were initially" is correct and usable in written English.
It can be used when discussing the early stages or first methods of a particular process or study.
Example: "The research revealed that various approaches were initially considered before settling on the most effective one."
Alternatives: "methods were first" or "strategies were initially".
Two alternative approaches were initially tested.
The same two approaches were initially used in this study.
Theoretical and Monte Carlo approaches were initially used for designing and optimizing device´s components.
However, additional time to reflect on the supports that were provided related to PBL and STEM-based instruction would have been useful, as both of these approaches were initially unfamiliar to nearly all the teachers.
Two approaches were initially investigated for positioning the catalyst on the substrates to choose the ideal approach for the growth of NWs: (1) deposition of metal films and (2) supplying the metal component in the vapor phase by evaporation of metal precursors.
Three approaches were initially considered: a scaled down version of the preceding 16,000-ton Connecticut class, five of which had been approved with the 1902 and 1903 budgets; a scaled-up version of the 12,500-ton 12,500-ton Maine1898 design, three of whiclassre commissioned from 1902 to 1904; and a completely new design which might incorporate new ideas and technology.
A brief review of the current state-of-the-art modelling approaches is initially provided, including the description of selecting continuum- and discontinuum-based techniques.
Although these approaches are initially promising, there is a lack of publicly-available software that would enable domain-based PPI prediction on a genome-wide scale for non-model organisms lacking large experimental data sets.
Although pathway-based approaches are initially developed for expression microarray data, and later extended to analysis of GWAS data, they may have good potential for a broader application to other omic data like NGS data.
The covariates age (< 50, 50 59, 60 75, > 75), sex, primary diagnosis, head size (22, 28, 32, 36, dual-mobility) and surgical approach were initially investigated as singular covariates resulting in a crude RR with 95% CI.
