Table 2.

TB notification by 3 periods from year 2017 to 2020 in China.

Year	Period	TB notification	Laboratory confirmed cases			Migrant cases
			n (%)	p value		n (%)	p value
2017	••	••	••	<0•0001		••	<0•0001
	Period 1	156923	48343(30•8%)			34242(21•8%)
	Period 2	162297	50781(31•3%)			34168(21•1%)
	Period 3	63843	20604(32•3%)			14924(23•4%)
2018	••	••	••	<0•0001		••	<0•0001
	Period 1	153131	53192(34•7%)			38341(25•0%)
	Period 2	167813	64127(38•2%)			42631(25•4%)
	Period 3	65027	26347(40•5%)			17628(27•1%)
2019	••	••	••	<0•0001		••	<0•0001
	Period 1	158714	65789(41•5%)			40035(25•2%)
	Period 2	160058	74441(46•5%)			42984(26•9%)
	Period 3	60294	29331(48•6%)			17041(28•3%)
2020	••	••	••	<0•0001		••	<0•0001
	Control	129782	68996(53•2%)			38072(29•3%)
	Intensive	103230	52935(51•3%)			26136(25•3%)
	Regular	52922	26898(50•8%)			13611(25•7%)