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. 2015 Oct 7;17(10):e228. doi: 10.2196/jmir.4941

Table 2.

Baseline sample characteristics of the participants in the Web-based computer-tailored interventions.

Study N Educational level, n (%)a Age (years), mean (SD) Gender (male), n (%)


Low Middle High

AEL 1149 483 (44.8) 256 (23.8) 338 (31.4) 43.82 (15.51) 550 (47.9)
MHB 5055 515 (10.4) 2334 (47.1) 2112 (42.6) 44.15 (12.67) 2661 (52.6)
MYB 1307 386 (29.5) 427 (32.7) 494 (37.8) 57.64 (7.22) 627 (47.9)
PAS 1123 238 (21.2) 513 (45.7) 372 (33.1) 49.47 (32.55) 535 (47.6)
STQ 2099 707 (33.6) 782 (37.3) 612 (29.2) 45.33 (13.21) 821 (39.1)
SQ4U 2031 207 (10.2) 1130 (55.6) 694 (34.2) 40.88 (11.80) 766 (37.7)
WIB 1419 214 (15.1) 436 (30.7) 769 (54.2) 48.13 (11.52) 588 (41.4)

a For reference, the average educational level in Germany for low, middle, and high is 39, 22, and 27, respectively [72]; for the Netherlands, it is 30, 28, and 42, respectively [73].