Table 3. Construct validity–differences between objective (Actiheart) and subjective (SQUASH) levels of Physical Activity.
| Actiheart, mean min/week (SD) | SQUASH, mean min/week (SD) | Mean difference (Actiheart–SQUASH), mean min/week (SD) | 95% Limits of Agreement (min/week) | Spearman’s correlation coefficient (p-value) | ||
|---|---|---|---|---|---|---|
| Light Intensity PA | ||||||
| Women | Dutch (n = 67) | 3712 (1328) | 1926 (856) | 1788 (1675) | ± 3283 | -0.11 (0.374) |
| SA Sur. (n = 55) | 4021 (1594) | 1510 (892) | 2530 (2061) | ± 4039 | -0.28 (0.039) | |
| African Sur. (n = 42) | 3259 (1379) | 1799 (1459) | 1468 (2169) | ± 4215 | -0.12 (0.437) | |
| Turkish (n = 40) | 4612 (1418) | 1436 (797) | 3144 (1519) | ± 2977 | 0.14 (0.407) | |
| Moroccan (n = 37) | 4081 (1041) | 1275 (1086) | 2738 (1564) | ± 3065 | -0.13 (0.459) | |
| Men | Dutch (n = 44) | 3003 (1373) | 1936 (966) | 1053 (1495) | ± 2930 | 0.20 (0.184) |
| SA Sur. (n = 43) | 3626 (1647) | 1487 (976) | 2165 (1853) | ± 3631 | 0.05 (0.743) | |
| African Sur. (n = 49) | 3795 (1754) | 1040 (889) | 2733 (1886) | ± 3696 | 0.15 (0.312) | |
| Turkish (n = 48) | 4237 (1683) | 1196 (1143) | 3049 (1756) | ± 3088 | 0.40 (0.005) | |
| Moroccan (n = 37) | 4490 (1730) | 1310 (1036) | 3181 (2115) | ± 4145 | -0.09 (0.609) | |
| Moderate and High Intensity PA | ||||||
| Women | Dutch | 344 (274) | 394 (396) | -52 (417) | ± 818 | 0.41 (0.001) |
| SA Sur. | 288 (497) | 354 (485) | -70 (702) | ± 1376 | 0.15 (0.278) | |
| African Sur. | 462 (1077) | 443 (622) | 8 (1259) | ± 2467 | 0.34 (0.029) | |
| Turkish | 222 (157) | 373 (568) | -162 (604) | ± 1184 | 0.30 (0.039) | |
| Moroccan | 381 (539) | 136 (206) | 251 (522) | ± 1023 | 0.12 (0.495) | |
| Men | Dutch | 489 (418) | 413 (463) | 68 (633) | ± 1240 | 0.17 (0.277) |
| SA Sur. | 256 (306) | 520 (657) | -265 (736) | ± 1443 | 0.26 (0.091) | |
| African Sur. | 286 (268) | 414 (576) | -124 (598) | ± 1172 | 0.38 (0.007) | |
| Turkish | 271 (337) | 467 (828) | -195 (804) | ± 1575 | 0.08 (0.605) | |
| Moroccan | 312 (320 | 476 (666) | -165 (682) | ± 1337 | 0.18 (0.301) | |
SA Sur. = South Asian Surinamese, African Sur. = African Surinamese