noun
rate per thousand; per mille
Technical term used in statistics, demographics, and finance to express a ratio per 1,000 units, similar to 'per mille' (‰).
出生率は千分比で表されることが多い。
The birth rate is often expressed as a rate per thousand.
この統計では死亡率を千分比で示している。
In this statistic, the death rate is shown per mille.
パーミル is the katakana loanword for 'per mille', often used interchangeably with 千分比 in technical contexts.
Compound of 千 (thousand), 分 (part, division), and 比 (ratio). The term follows the pattern of 百分率 (percentage) but for a base of 1,000.