목적: The indication for receiver-in-the-canal (RIC) seems to be overlapped with that of completely-in-the-canal (CIC). However, RIC tends to be much more used rather than CIC these days, in spite of each advantage and disadvantage. The purposes of this study were to compare objective and subjective outcomes between RIC and CIC hearing aids and to evaluate their efficiency in moderate hearing loss patients. 방법:Seventy five patients were included in this retrospective study, who had moderate hearing loss at 1000Hz with a slope-type hearing loss pattern. Fifty three patients were fitted with CIC and twenty two patients were fitted with RIC. Objective outcomes were evaluated with unaided and aided pure tone audiometry (PTA) and hearing in noise test (HINT). Subjective satisfactions were evaluated with attitude toward loss of hearing questionnaire (ALHQ) and Korean version of international outcome inventory-hearing aids (K-IOI-HA). We compared the results of the objective and subjective evaluations between CIC and RIC groups. 결과:Functional gain was better at 500 and 1000 Hz in the CIC group after 2 weeks of HA use (p<0.05), but there was no significant difference in the functional gain except for 500Hz after 2~3 months of HA use. Both the CIC and RIC groups showed significant improvement in the HINT results in quiet and contralateral noise conditions after 2~3 months of HA use (p<0.05). However there was no significant difference in the degree of improvement in HINT between the two groups. ALHQ and K-IOI-HA was completed in 31 and 35 patients, respectively. There was no significant difference in the subscale scores of ALHQ between the two groups. But, RIC users were tend to be more satisfied with their quality of life than CIC users, based on the results of K-IOI-HA (p<0.05). 결론:There were no large difference in the objective benefits of CIC and RIC in moderate hearing loss patients after 2~3 months. However, RIC users tend to be more satisfied with their quality of life.