Table 1 Distribution of demographic characteristics and risk of developing obesity among initially non-obese participants of the Thai Cohort Study
Thai cohort study | Female (N = 28,635) | Male (N = 19,855) | Total (48,490) |
|---|---|---|---|
Mean age in 2005 (sd) | 29.6 (7.4) | 32.2 (8.4) | 30.7 (7.9) |
Monthly household income in 2009: (%:n) | Â | Â | Â |
 <10,000 baht | 22.1 (6333) | 22.5 (4461) | 22.3 (10.794) |
 10,000-20,000 baht | 24.6 (7046) | 24.7 (4902) | 24.6 (11,948) |
 20,000-50,000 baht | 38.4 (10,985) | 39.2 (7792) | 38.7 (18,777) |
 >50,000 baht | 13.4 (3842) | 11.4 (2255) | 12.6 (6097) |
 Missing | 1.5 (429) | 2,2 (445) | 1.8 (874) |
Early life location at age 10–12: (%,n) |  |  |  |
 Rural | 74.6 (21,373) | 79.2 (15,731) | 76.5 (37,104) |
 Urban | 25.4 (7262) | 20.8 (4124) | 23.5 (11,386) |
Residence in 2005 (%,n) | Â | Â | Â |
 Rural | 48.0 (13,753) | 51.6 (10,235) | 49.5 (23,988) |
 Urban | 51.8 (14,8219) | 48.2 (9,575) | 50.3 (24,394) |
 Missing | 0.2 (63) | 0.2 (45) | 0.2 (108) |
Residence in 2009 (%,n) | Â | Â | Â |
 Rural | 42.1 (12,059) | 46.8 (92,823) | 44.0 (21,341) |
 Urban | 56.6 (16,209) | 52.2 (10,371) | 54.8 (26,580) |
 Missing | 1.3 (367) | 1.0 (202) | 1.2 (569) |
BMI in 2005 (mean, sd) | 20.2 (2.1) | 21.6 (2.0) | 20.8 (2.2) |
BMI in 2009 (mean, sd) | 21.0 (2.6) | 22.4 (2.3) | 21.6 (2.6) |
Increase in BMI (mean, sd) | 0.84 (1.6) | 0.75 (1.5) | 0.80 (1.6) |
Developed obesity (BMI ≥25) by 2009 (%,n) | 7.3 (2077) | 11.8 (2346) | 9.1 (4423) |