Table 1.
Baseline demographic.
| Total (n = 551) | HKL (n = 300) | HQE (n = 130) | HQE2 (n = 121) | |
|---|---|---|---|---|
| Age in years (mean (SD)) | 33.6 (7.2) | 32.9 (6.5) | 32.5 (6.0) | 36.8 (8.9) |
| Gender (female) | 417 (75.7%) | 211 (70.3%) | 108 (83.1%) | 98 (81.0%) |
| BMI (mean (SD))a | 27.1 (5.8) | 27.4 (5.9) | 26.8 (6.2) | 26.6 (4.9) |
| BMI categorya | ||||
| Underweight | 14 (2.5%) | 8 (2.7%) | 4 (3.1%) | 2 (1.7%) |
| Normal | 213 (38.7%) | 113 (37.7%) | 51 (39.2%) | 49 (40.5%) |
| Overweight | 177 (32.1%) | 89 (29.7%) | 43 (33.1%) | 45 (37.2%) |
| Obese | 145 (26.3%) | 89 (29.7%) | 32 (24.6%) | 24 (19.8%) |
| Ethnicity | ||||
| Malay | 263 (47.7%) | 232 (77.3%) | 18 (13.8%) | 13 (10.7%) |
| Chinese | 58 (10.5%) | 27 (9.0%) | 14 (10.8%) | 17 (14.1%) |
| Indian | 33 (6.0%) | 25 (8.3%) | 4 (3.1%) | 4 (3.3%) |
| Indigenous people of Sabah and Sarawak | 195 (35.4%) | 14 (4.7%) | 94 (72.3%) | 87 (71.9%) |
| Other ethnic groupsb | 2 (0.4%) | 2 (0.7%) | 0 (0.0%) | 0 (0.0%) |
| Had COVID-19 infection prior to vaccination | 21 (3.8%) | 7 (2.3%) | 10 (7.7%) | 4 (3.3%) |
| Comorbidity | ||||
| None | 452 (82.0%) | 243 (81.0%) | 113 (86.9%) | 96 (79.3%) |
| 1 | 76 (13.8%) | 47 (15.7%) | 12 (9.23%) | 17 (14.0%) |
| ≥2 | 23 (4.2%) | 10 (3.33%) | 5 (3.85%) | 8 (6.6%) |
| Comorbidities | ||||
| Hypertension | 34 (6.2%) | 14 (4.7%) | 6 (4.6%) | 14 (11.6%) |
| Diabetes mellitus | 22 (4%) | 12 (4.0%) | 3 (2.3%) | 7 (5.8%) |
| Dyslipidaemia | 11 (2.0%) | 8 (2.7%) | 1 (0.8%) | 2 (1.7%) |
| Allergy | 28 (5.1%) | 17 (5.7%) | 4 (3.1%) | 7 (5.8%) |
| Respiratory disease | 26 (4.7%) | 15 (5.0%) | 8 (6.2%) | 3 (2.5%) |
| Occupation | ||||
| Nurse | 273 (49.6%) | 159 (53.0%) | 63 (48.5%) | 51 (42.1%) |
| Doctor | 79 (14.3%) | 42 (14.0%) | 17 (13.1%) | 20 (16.5%) |
| Assistant Medical Officer | 54 (9.8%) | 38 (12.7%) | 5 (3.8%) | 11 (9.1%) |
| Pharmacist | 45 (8.2%) | 27 (9.0%) | 8 (6.1%) | 10 (8.3%) |
| Laboratory personnel | 26 (4.7%) | 11 (3.7%) | 13 (10%) | 2 (1.7%) |
| Other occupationsc | 74 (13.4%) | 23 (7.6%) | 24 (18.5%) | 27 (22.3%) |
| Department | ||||
| Internal medicine | 162 (29.4%) | 84 (28.0%) | 37 (28.5%) | 41 (33.9%) |
| Surgery | 101 (18.3%) | 70 (23.3%) | 17 (13.1%) | 14 (11.6%) |
| Pharmacy | 49 (8.9%) | 27 (9.0%) | 9 (6.9%) | 13 (10.7%) |
| Anaesthesiology & Intensive Care | 38 (6.9%) | 16 (5.3%) | 11 (8.5%) | 11 (9.1%) |
| Pathology | 34 (6.2%) | 14 (4.7%) | 15 (11.5%) | 5 (4.1%) |
| Supporting Services | 27 (4.9%) | 10 (3.3%) | 7 (5.4%) | 10 (8.3%) |
| Accident & Emergency | 24 (4.4%) | 19 (6.3%) | 0 (0.0%) | 5 (4.1%) |
| Other departmentsd | 116 (21.1%) | 60 (20.0%) | 34 (26.1%) | 22 (18.2%) |
| Occupational exposure to SARS-CoV-2 | ||||
| Perform nasopharyngeal swabbing | 101 (18%) | 73 (24%) | 12 (9%) | 16 (13%) |
| Face-to-face exposure (with or without PPE) | 192 (35%) | 122 (41%) | 50 (39%) | 20 (17%) |
| Provide care to COVID-19 patients | 162 (29%) | 100 (33%) | 50 (39%) | 12 (10%) |
| Perform aerosol-generating procedure | 84 (15%) | 52 (17%) | 26 (20%) | 6 (5%) |
| Handling biospecimen of COVID-19 patients | 139 (25%) | 83 (28%) | 45 (35%) | 11 (9%) |
| Contact with COVID-19 environment | 162 (29%) | 109 (36%) | 39 (30%) | 14 (12%) |
HKL, Hospital Kuala Lumpur; HQE, Hospital Queen Elizabeth; HQE2, Hospital Queen Elizabeth 2; SD, standard deviation, BMI, body mass index.
BMI data were summarized from 549 participants. Two participants did not provide height and weight for BMI calculation.
Other ethnic groups include Semai and Siamese.
Other occupations include health attendant, radiographer/X-ray technician, physiotherapist/occupational therapist, dietitian/nutritionist, administrative staff, dentist, health inspector, disinfection team, driver.
Other departments include orthopaedics, radiology, paediatric, ophthalmology, obstetrics and gynaecology, state health department, psychiatry, otolaryngology, administrative office, dental, cleaning services, and primary care.