. 2021 Nov 3;19:100311. doi: 10.1016/j.lanwpc.2021.100311

Table 4.

Observed number and predicted difference of health service use related to any mental health/behavioural disorders in 2020 and 2021

Month in 2020 – 21	Hospital inpatient admissions		Emergency department (ED) attendances ²
Month in 2020 – 21	Observed number	Difference % (95%CI) ¹	Observed number	Difference % (95%CI) ¹
JAN	152	-18.51 (-36.38, 13.32)	116	0.48 (-22.47, 42.7)
FEB	209	11.68 (-12.8, 55.25)	150	5.9 (-14.69, 39.61)
MAR	239	27.29 (-0.6, 76.9)	160	3.38 (-15.34, 32.75)
APR	152	-19.31 (-36.98, 12.11)	115	-12.43 (-30.55, 18.5)
MAY	217	14.81 (-10.31, 59.49)	155	13.46 (-9.32, 51.52)
JUN	241	27.09 (-0.71, 76.53)	188	33.1 (7.06, 75.87)^⁎⁎
JUL	291	52.96 (19.51, 112.43)^⁎⁎⁎	166	25.59 (-0.34, 69.77)
AUG	274	43.56 (12.17, 99.35)^⁎⁎	233	46.53 (20.44, 87.03)^⁎⁎⁎
SEP	239	24.82 (-2.47, 73.31)	220	38.29 (13.66, 76.56)^⁎⁎⁎
OCT	262	36.39 (6.57, 89.37)^*	207	54.09 (22.59, 107.39)^⁎⁎⁎
NOV	308	59.82 (24.88, 121.9)^⁎⁎⁎	221	44.74 (18.02, 87.1)^⁎⁎⁎
DEC	222	14.82 (-10.28, 59.44)	169	32.10 (3.97, 81.09)^*
JAN	208	7.24 (-16.21, 48.91)	138	9.23 (-18.27, 64.62)
FEB	234	20.26 (-6.04, 67.01)	193	34.49 (3.70, 91.27)^*

Percentage difference was calculated using the formula $\frac{o b s e r v e d v a l u e - p r e d i c t e d v a l u e}{p r e d i c t e d v a l u e} \times 100 %$ , where the predicted value was estimated based on the 2016-2019 monthly number of healthcare occasions using the autoregressive error models.

ED data do not include the chronic conditions that involve the severity criteria for identification (Hardelid et al. [24])

^⁎⁎⁎

p<.001

^⁎⁎

p<.01

^⁎

p<.05