TABLE 1

Comparison of demographic and clinical characteristics of intervention and control groups

VariableData for:
Intervention groupControl groupIntervention vs control groups (P value)e
Standard PCR (n = 953)Rapid PCR (n = 1,209)2016 (n = 937)2017 (n = 1,102)Standard PCR vs control 2016Rapid PCR vs control 2017
Female, n (%)480 (50.4)619 (51.2)473 (50.5)565 (51.3)0.960.97
Age (yrs), median (IQR)75 (62–84)77 (65–86)75 (62–84)76 (64–84)0.970.11
Hospital, n (%)0.940.58
    A434 (45.5)672 (55.6)431 (46.0)589 (53.5)
    B340 (35.7)205 (17.0)327 (34.9)198 (18.0)
    C179 (18.8)332 (27.5)179 (19.1)315 (28.6)
Time of day of hospital admission, n (%)<0.010.95
    7 a.m.–7 p.m.598 (62.8)866 (71.6)657 (70.1)788 (71.5)
    7 p.m.–7 a.m.355 (37.2)343 (28.4)280 (29.9)314 (28.5)
Day of week of admission, n (%)0.990.24
    Weekdays700 (73.5)920 (76.1)688 (73.4)815 (74.0)
    Weekends253 (26.5)289 (23.9)249 (26.6)287 (26.0)
Source of referral, n (%)
    Emergency department926 (97.2)1,196 (98.9)874 (93.3)1,007 (91.4)<0.01<0.01
    Othera27 (2.8)13 (1.1)63 (6.7)95 (8.6)
Intensive care admission, n (%)110 (11.5)113 (11.0)41 (4.4)52 (4.7)<0.01<0.01
Mode of separation, n (%)0.680.09
    Discharged by hospital805 (84.5)972 (80.4)805 (85.9)924 (83.9)
    Transferred/discharged at own risk110 (11.5)171 (14.1)98 (10.5)125 (11.3)
    Died in hospital38 (4.0)66 (5.5)34 (3.6)53 (4.8)
Charlson comorbidity index, median (IQR)1 (0–2)1 (0–2)1 (0–2)1 (0–2)0.010.13
Principal diagnosis, n (%)<0.01<0.01
    Influenza and pneumonia527 (55.3)758 (62.7)276 (29.5)358 (32.5)
    Chronic lower respiratory diseases229 (24.0)258 (21.3)293 (31.3)307 (27.9)
    Acute upper respiratory infections53 (5.6)45 (3.7)75 (8.0)95 (8.6)
    Other acute lower respiratory infectionsb70 (7.4)51 (4.2)64 (6.8)62 (5.6)
    Lung diseases due to external agentsc36 (3.8)43 (3.6)97 (10.4)91 (8.3)
    Other respiratory diseasesd38 (4.0)54 (4.5)132 (14.1)189 (17.2)
  • a Medical practitioner, outpatient, day procedure center, community health.

  • b ICD-10-AM: J20 to J22.

  • c ICD-10-AM: J60 to J70.

  • d ICD-10-AM: J30 to J39; J85 to J84; J85 to J86; J90 to J94, and J95 to J99.

  • e Comparisons were made using Pearson’s chi-square test for categorical variables and the Mann-Whitney test for continuous variables, and the P value shows the distribution of a given variable across groups.