. 2019 May 15;30:54–66. doi: 10.1016/j.tmaid.2019.05.009

Table 2.

Average monthly percentage changes between 2015 actual and projected (average of 2013 and 2014) non-citizen arrivals to the Republic of Korea (ROK) by whether the country had 100 or more severe acute respiratory syndrome (SARS) cases during the 2003 outbreak.

Months	The 2015 Middle East respiratory syndrome (MERS) outbreak status	SARS ≥100 cases (n = 5)		SARS <100 cases (n = 13)		p-value
Months		%	SE	%	SE	p-value
Jan	Before the MERS outbreak	21.7	9.8	3.0	4.9	0.934
Feb		31.1	13.6	1.7	4.3	0.954
Mar		28.4	7.8	7.5	5.8	0.973
Apr		38.5	7.0	15.4	5.2	0.988

May	First MERS case reported May 20, 2015	30.2	9.9	9.2	3.5	0.952

Jun	Peak months of the MERS outbreak	−52.4	9.8	−23.3	2.9	0.018
Jul	Peak months of the MERS outbreak	−60.0	11.0	−31.4	4.7	0.026

Aug	Non-peak months of the MERS outbreak	−28.5	7.8	−3.8	10.2	0.035
Sep		6.7	12.7	−4.4	4.7	0.776
Oct		6.5	10.6	8.1	5.1	0.446
Nov		11.4	7.5	10.3	5.7	0.548
Dec		9.5	8.6	5.7	3.3	0.655

Notes: Non-citizen arrivals are limited to non-citizen short-term visitor arrivals. Monthly percentage changes were calculated by the following equation. $\frac{A c t u a l (w i t h t h e M E R S o u t b r e a k) - P r o j e c t e d (i f t h e r e w a s n o M E R S o u t b r e a k)}{P r o j e c t e d (i f t h e r e w a s n o M E R S o u t b r e a k)} \times 100 %$

SE stands for standard error. Boldface indicates statistical significance (p < 0.05). Areas in the ≥100 SARS cases category are China, Taiwan–China, Hong Kong SAR–China, Singapore, and Canada.