Baseline characteristics | Wave 1 (7/11/15–31/7/2016) | Wave 2 (1/10/16–31/3/2017) | Wave 3 (28/10/17–30/4/2018) | Singapore 2017 | ||||
---|---|---|---|---|---|---|---|---|
n | % | n | % | n | % | % | (95% CI) | |
Total individuals signed-up | 129,677 | 83% | 364,500 | 100% | 690,233 | 100% | n/a | n/a |
Participants surveyed at baseline | 101,000 | 78% | 311,000 | 85% | 611,000 | 89% | n/a | n/a |
Gender | ||||||||
 Female | 59,590 | 59%* | 180,380 | 58%* | 354,380 | 58%* | 51% | (50.0–52.0) |
 Male | 41,410 | 41% | 130,620 | 42% | 256,620 | 42% | 49% | (48.0–50.0) |
Age | ||||||||
 17–39 years | 53,530 | 53%* | 149,280 | 48%* | 281,060 | 46%* | 39% | (38.0–40.0) |
 40–49 years | 19,190 | 19% | 62,200 | 20% | 128,310 | 21%* | 19% | (18.2–19.8) |
 50–59 years | 16,160 | 16%* | 49,760 | 16%* | 103,870 | 17%* | 19% | (18.2–19.8) |
 60–69 years | 9090 | 9%* | 34,210 | 11%* | 73,320 | 12%* | 15% | (14.3–15.7) |
 ≥ 70 years | 3030 | 0.5%* | 15,550 | 5%* | 36,660 | 6% | 7% | (6.5–7.5) |
Body Mass Index**(kg/m2) | ||||||||
 High risk (≥27.5) | 11,898 | 19% | 39,310 | 16%* | 81,141 | 16%* | 18% | (17.2–18.8) |
 Moderate risk (23–27.4) | 21,291 | 34% | 78,621 | 32%* | 162,282 | 32%* | 35% | (34.0–36.0) |
 Low risk (18.5–22.9) | 25,048 | 40% | 98,276 | 40% | 192,709 | 38%* | 40% | (39.0–41.0) |
 Low weight (≤ 18.5) | 3757 | 6%* | 29,483 | 12%* | 70,998 | 14%* | 8% | (7.4–8.6) |
 Non-response on bmi question | 38,380 | 38% | 65,310 | 21% | 103,870 | 17% | n/a | n/a |
Baseline physical activity | ||||||||
 <  150 min/week (inactive) | 15,150 | 15%* | 14,140 | 14%* | 91,650 | 21%* | 26% | (25.1–26.9) |
Daily step count (number, sd) | 4512 | (4135) | 6221 | (5400) | 7432 | (5012) | Â | Â |
 % <  5000 steps/day (sedentary) | 533 | 21% | 326 | 14% | 310 | 15% | n/a | n/a |
 % ≥ 5000 steps/day (active) | 1969 | 79% | 2017 | 86% | 1716 | 85% | n/a | n/a |