患 者 数(かんじゃすう)

かんじゃすう

noun

number of patients

1. the number of patients (with a particular illness, at a hospital, in a region, etc.)

A statistical noun for a count of patients. Combines 患者(かんじゃ) ("patient") with the productive suffix ~数(すう) ("number of, count of"). Heard most often in news reports and medical statistics — for example, the number of patients with a contagious disease, the number of patients at a hospital, or the number of patients in a particular age bracket.

患者数(かんじゃすう)が増(ふ)えている。

The number of patients is increasing.

今年(ことし)のインフルエンザの患者数(かんじゃすう)は例年(れいねん)より多(おお)い。

This year's number of flu patients is higher than usual.

冬(ふゆ)になると病院(びょういん)の患者数(かんじゃすう)は急激(きゅうげき)に増加(ぞうか)する。

Once winter arrives, the number of patients at hospitals rises sharply.

厚生労働省(こうせいろうどうしょう)は毎週(まいしゅう)、感染症(かんせんしょう)の患者数(かんじゃすう)を都道府県(とどうふけん)別(べつ)に発表(はっぴょう)している。

The Ministry of Health, Labour and Welfare announces the number of infectious-disease patients by prefecture each week.

患者数(かんじゃすう) is a routine compound used wherever patient counts are discussed — public health reports, hospital statistics, news coverage of outbreaks. It is built from the everyday word 患者(かんじゃ) plus ~数(すう), a highly productive suffix for forming "number of X" nouns.

Forms

患者(かんじゃ) ("patient") + ~数(すう) ("number of, count") → 患者数(かんじゃすう)

Common collocations

患者数(かんじゃすう)が増(ふ)える / 減(へ)る: the number of patients increases / decreases
患者数(かんじゃすう)が急増(きゅうぞう)する: to rise sharply
患者数(かんじゃすう)ピーク: peak in patient numbers
累計(るいけい)患者数(かんじゃすう): cumulative patient count
新規(しんき)患者数(かんじゃすう): number of new patients
1日(にち)あたりの患者数(かんじゃすう): number of patients per day

RELATED ~数(すう) COMPOUNDS:

人数(にんずう): number of people
死者数(ししゃすう): number of deaths
感染者数(かんせんしゃすう): number of infections
利用者数(りようしゃすう): number of users
来場者数(らいじょうしゃすう): number of visitors / attendees

Similar / related terms

患者(かんじゃ): a patient (the base noun)
感染者(かんせんしゃ): an infected person (a more specific term in disease-outbreak contexts)
陽性(ようせい)者数(しゃすう): number of positive cases (used during the COVID-19 pandemic)
重症(じゅうしょう)患者(かんじゃ): a seriously ill patient

Usage

During major disease outbreaks, the daily 患者数(かんじゃすう) or 感染者数(かんせんしゃすう) becomes a closely watched statistic in Japanese news.
The ~数(すう) suffix is freely productive: speakers can readily form new ~数(すう) compounds (e.g., 外来(がいらい)患者(かんじゃ)数(すう) "outpatient count") even when those compounds are not formally listed in dictionaries.

Related Words

Compare: 感染者(かんせんしゃ) (an infected person)

general

Added 2026.5.10 10:56 · Revised 2026.9.2 13:02

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