Table 2.

Number and proportion of advertisements in selected mass transit railway (MTR) stations

MTR stations	Number of advertisements
	August 2018			February 2019			March 2019			Total
	Total n	Food		Total n	Food		Total n	Food		Total n	Food
		n	%		n	%		n	%		n	%
High SES school zones
HKU	381	31	8·1	370	31	8·4	362	17	4·7	1113	79	7·1
Kowloon Tong	288	59	20·5	655	88	13·4	669	47	7·0	1612	194	12·0
Subtotal	669	90	13·6	1025	119	11·6	1031	64	6·2	2725	273	10·0
Low SES school zones
Kowloon Bay	161	35	21·7	195	39	20·0	200	14	7·0	556	88	15·8
Tin Shui Wai	181	8	4·4	218	26	11·9	240	18	7·5	639	52	8·1
Subtotal	342	43	12·3	414	65	15·9	440	32	7·3	1195	140	11·7
High SES non-school zones
Mong Kok	551	94	17·1	621	49	7·9	579	30	5·2	1751	173	9·9
Sheung Wan	484	95	19·6	523	50	9·6	518	29	5·6	1525	174	11·4
Subtotal	1035	189	18·3	1144	99	8·7	1097	59	5·4	3276	347	10·6
Low SES non-school zones
Ngau Tau Kok	119	22	18·5	153	19	12·4	152	8	5·3	424	49	11·6
Kwai Fong	149	19	12·8	130	18	13·8	165	15	9·1	444	52	11·7
Subtotal	268	41	15·3	283	37	13·1	317	23	7·3	868	101	11·6
Total	2314	363	15·7	2865	320	11·2	2885	178	6·2	8064	861	10·7
High SES	1704	279	16·4	2169	218	10·1	2128	123	5·8	6001	620	10·3
Low SES	610	84	13·8	696	102	14·7	757	55	7·3	2063	241	11·7
P SES *	–	0·136		–	0·001		–	0·159		–	0·090
School zones	1011	133	13·2	1438	184	12·8	1471	96	6·5	3920	413	10·5
Non-school zones	1303	230	17·7	1427	136	9·5	1414	82	5·8	4144	448	10·8
P School †	–	0·003		–	0·006		–	0·439		–	0·692

SES, socioeconomic status.

^*P_SES tested using Fisher’s exact test for difference between high v. low SES stations.

^†P_School tested using Fisher’s exact test for difference between stations in school zone v. non-school zone.