TABLE 1—
Baseline Characteristics of Patients in Intervention- and Control-Period Clinics, by Study Phases: Singapore, November 2017–July 2018
| Initial Phase |
Crossover Phase |
|||||
| Patient Characteristic | Intervention-Period Clinics (n = 2267), Median (IQR) or No. (%) | Control-Period Clinics (n = 2277), Median (IQR) or No. (%) | Pa | Intervention-Period Clinics (n = 2111), Median (IQR) or No. (%) | Control-Period Clinics (n = 2182), Median (IQR) or No. (%) | Pa |
| Age, y | 70 (67–76) | 71 (68–77) | .41 | 71 (68–77) | 71 (68–76) | .41 |
| Age group, y | .7 | .58 | ||||
| 65–69 | 944 (41.6) | 925 (40.6) | 849 (40.2) | 879 (40.3) | ||
| 70–74 | 621 (27.4) | 602 (26.4) | 565 (26.8) | 623 (28.6) | ||
| 75–79 | 355 (15.7) | 372 (16.3) | 333 (15.8) | 334 (15.3) | ||
| 80–84 | 195 (8.6) | 214 (9.4) | 197 (9.3) | 181 (8.3) | ||
| ≥ 85 | 152 (6.7) | 164 (7.2) | 167 (7.9) | 165 (7.6) | ||
| Gender = male | 1021 (45.0) | 1021 (44.8) | .89 | 950 (45.0) | 996 (45.6) | .68 |
| Ethnic group | <.01 | <.01 | ||||
| Chinese | 1779 (78.5) | 1864 (81.9) | 1770 (83.8) | 1670 (76.5) | ||
| Malay | 217 (9.6) | 116 (5.1) | 100 (4.7) | 211 (9.7) | ||
| Indian | 93 (4.1) | 83 (3.6) | 94 (4.5) | 84 (3.8) | ||
| Others | 52 (2.3) | 57 (2.5) | 58 (2.7) | 59 (2.7) | ||
| Not stated | 126 (5.6) | 157 (6.9) | 89 (4.2) | 158 (7.2) | ||
| Rental or smaller housing flats | 143 (6.3) | 141 (6.2) | .46 | 111 (5.3) | 134 (6.1) | .15 |
| On follow-up with clinic for | ||||||
| Diabetes | 120 (5.3) | 111 (4.9) | .52 | 114 (5.4) | 113 (5.2) | .75 |
| Hypertension | 435 (19.2) | 400 (17.6) | .16 | 390 (18.5) | 441 (20.2) | .15 |
| Hyperlipidemia | 311 (13.7) | 300 (13.2) | .59 | 300 (14.2) | 319 (14.6) | .7 |
| Asthma or COPD or both | 24 (1.1) | 22 (1.0) | .76 | 18 (0.9) | 27 (1.2) | .22 |
Note. COPD = chronic obstructive pulmonary disease; IQR = interquartile range.
a
P values compare differences in characteristics of patients from clinics undergoing intervention versus control periods during the initial phase and crossover phase, respectively.