Table 2.

Mean rates per 100,000 population per week

	Academic Year (2020–2021)				Academic Year (2021–2022)
	Adult ≥ 18	(12–17)	(5–11)	p value	Adult ≥ 18	(12–17)	(5–11)	p value
Testing Rate
COVID-19 wave	4,297	3,763	2,904	P = 0.000	6,723	7,872	6,330	P = 0.015
School academic period	3,057	2,403	1,978	P = 0.035	4,075	3,985	4,409	P = 0.000
School Holidays	4,061	3,786	3,552	p = 0.230	3,356	4,734	3,511	P = 0.032
Incidence
COVID-19 wave	466	424	325	P = 0.047	1,771	2,238	1,804	P = 0.000
School academic period	116	102	83	P < 0.001	79	139	170	P = 0.031
School Holidays	76	64	54	P = 0.202	43	71	98	P = 0.072
Positivity
COVID-19 wave	10.2%	11.7%	11.5%	P = 0.002	22.0%	25.0%	25.6%	P = 0.000
School period	4.0%	4.7%	4.8%	P = 0.025	4.4%	6.3%	6.3%	P = 0.015
School Holidays	2.2%	2.1%	2.3%	P = 0.122	7.0%	7.0%	7.4%	P = 0.518

Analysis Of Variance (ANOVA) test was used for comparing the means. The mean difference was considered significant at the 0.05 level (p < 0.05)

Games-Howell Post hoc test was used for post hoc analysis to determine the statistical significance of differences in group pairs means

COVID-19 wave in Y1: Alpha/Beta/Delta variants wave (Refer to Supplementary files “SF1”, “SF2”)

COVID-19 wave in Y2: Omicron variant wave (Refer to Supplementary files “SF1”, “SF2”