Marx 2009.

Study characteristics
Methods	Study design: RCT, parallel‐group design Numbers randomized (total and per group): total 51 participants Unit of randomization: person Masking: not reported Exclusions and losses to follow‐up (total and per group): not reported Number analyzed (total and per group): not reported Unit of analysis (person or eye): person Study duration (planned and actual): 4 weeks Intervention duration: 4 weeks How were missing data handled: not reported Sample size and power calculation: not reported
Participants	Country: Germany Setting: university clinics Inclusion criteria: neophyte contact lens wearers Exclusion criteria: not reported Baseline characteristics Refractive condition: not reported Nelfilcon A women (n, %): not reported age (mean, SD): not reported race/ethnicity (n, %): not reported habitual wearers (n, %): 0 (0%) Narafilcon A women (n, %): not reported age (mean, SD): not reported race/ethnicity (n, %): not reported habitual wearers (n, %): 0 (0%) Overall (N = 51) women (n, %): not reported age (mean, SD): not reported race/ethnicity (n, %): not reported habitual wearers (n, %): 0 (0%)
Interventions	Nelfilcon A material: hydrogel replacement frequency: daily Narafilcon A material: silicon hydrogel replacement frequency: daily
Outcomes	Primary outcomes: subjective ratings of overall comfort, vision, handling, and satisfaction acceptable lens fit average wearing time and comfortable wearing time willingness to purchase Secondary outcomes: not specified Adverse outcomes (Y/N), if yes, please describe: N Measurement time points: 1, 2, and 4 weeks
Notes	Sponsorship source: CIBA VISION Corporation Author's name: Sebastian Marx Institution: Ernst Abbe University of Applied Sciences Conflicts of interest: not reported Publication language: English Trial register: not reported