Table 2.
Comparisons of the proportion of asthma symptoms between participants recruited in Malaysia and Singapore. Chi-squared tests were conducted to determine the statistical significance of the difference between the proportions of affected participants from either country.
| Characteristic | Malaysia N = 4,028a |
Singapore N = 11,473a |
P-valueb |
|---|---|---|---|
| Ever wheezing | .01 | ||
| No | 2982 (79.2%) | 9278 (81.1%) | |
| Yes | 784 (20.8%) | 2158 (18.9%) | |
| Wheezing in the past 12 months | <.001 | ||
| No | 3160 (84.2%) | 8044 (90.8%) | |
| Yes | 595 (15.8%) | 811 (9.2%) | |
| Wheezy chest after exercise | <.001 | ||
| No | 3185 (88.4%) | 8722 (96.0%) | |
| Yes | 417 (11.6%) | 365 (4.0%) | |
| Dry nocturnal cough | .004 | ||
| No | 3128 (86.8%) | 8047 (88.6%) | |
| Yes | 477 (13.2%) | 1039 (11.4%) |
a
n (%).
b
Pearson's Chi-squared test; the sum of the number of observations may not tally with the total number of in either Malaysia or Singapore due to missing or incomplete responses