Table 1.

The general characteristics of the study population of Polish beekeepers surveyed in years 2017–2020. N = number of respondents.

	Overall	2017/18 (N = 233)	2018/19 (N = 394)	2019/20 (N = 408)
No. of colonies owned by a beekeeper a	23, 12–43 (1–800)	25, 12–47 (1–498)	25, 13–44 (1–500)	21, 11–38 (2–800)
The total number of colonies before winter	40,003	9350	15,023	15,630
The total number of colonies lost after winter	4867	1085	1611	2171
The overall winter colony loss rate (95% confidence interval, CI 95%)	12.1 (10.3–14.2)	11.6 (9.7–13.9)	10.7 (9.2–12.4)	13.9 (12.2–15.7)

^a Presented as the median, interquartile range (IQR), and range.