Table 1.
Descriptive statistics for all treated patients with myocardial infarction and stratified by adherence to internet-delivered cognitive behavioral therapy.
| Variables | All (n=90) | Adherers (n=43) | Nonadherers (n=47) | P value | Missing | |||
| Demographics | ||||||||
| Age (years) mean (SD) | 58.4 (9.4) | 57.0 (10.4) | 60.0 (8.3) | .17 | 0 | |||
| Women, n (%) | 34 (38) | 23 (54) | 11 (23) | .006 | 0 | |||
| Civic status, n (%) | .80 | 0 | ||||||
| Single | 15 (17) | 8 (19) | 7 (15) | |||||
| Cohabitant/married | 72 (80) | 34 (79) | 38 (81) | |||||
| Not single but living alone | 3 (3) | 1 (2) | 2 (4) | |||||
| Education (highest attained) n (%) | .79 | 0 | ||||||
| Elementary | 14 (16) | 5 (12) | 9 (19) | |||||
| High school | 31 (34) | 16 (37) | 15 (32) | |||||
| University ≤3 years | 20 (22) | 10 (23) | 10 (21) | |||||
| University >3 years | 25 (28) | 12 (28) | 13 (28) | |||||
| Country of birth, n (%) | 17 (19) | 8 (19) | 9 (19) | >.99 | 0 | |||
| Clinical | ||||||||
| Heart rate, mean (SD) | 77.0 (20.4) | 77.6 (21.3) | 76.5 (19.7) | .81 | 6 | |||
| SBPa, mean (SD) | 149.5 (32.0) | 150.5 (28.2) | 148.5 (35.6) | .78 | 6 | |||
| BMIb, mean (SD) | 27.9 (5.0) | 27.9 (5.8) | 28.0 (4.3) | .89 | 9 | |||
| Alcohol (glasses/week), median (IQRc) | 2.0 (0.0, 7.3) | 2.0 (0.0, 8.5) | 2.0 (0.0, 5.0) | .44 | 10 | |||
| Current smoker, n (%) | 4 (4) | 2 (5) | 2 (4) | >.99 | 0 | |||
| CVDd medication adherence, n (%) | 18 (20) | 11 (26) | 7 (15) | .32 | 0 | |||
| Psychoactive medication, n (%) | .45 | 0 | ||||||
| None | 75 (83) | 34 (79) | 41 (88) | |||||
| As needed | 6 (7) | 3 (7) | 3 (6) | |||||
| Regularly | 7 (8) | 4 (9) | 3 (6) | |||||
| Regularly and as needed | 2 (2) | 2 (5) | 0 (0) | |||||
| Other current counseling, n (%) | .48 | 0 | ||||||
| No | 67 (74) | 31 (72) | 36 (77) | |||||
| ≥Once per year, <once per month | 9 (10) | 6 (14) | 3 (6) | |||||
| ≥Once per month | 14 (16) | 6 (14) | 8 (17) | |||||
| Psychometric, mean (SD) | ||||||||
| CAQe fear | 12.7 (6.0) | 14.6 (5.4) | 11.0 (6.0) | .004 | 0 | |||
| CAQ avoidance | 7.3 (4.4) | 7.4 (4.2) | 7.1 (4.7) | .74 | 0 | |||
| CAQ attention | 5.7 (3.2) | 6.4 (3.4) | 5.1 (3.0) | .05 | 0 | |||
| CAQ total | 25.7 (10.0) | 28.4 (9.8) | 23.2 (9.6) | .01 | 0 | |||
| ESSIf total | 20.1 (4.4) | 20.4 (4.0) | 19.7 (4.7) | .49 | 0 | |||
| EQ5Dg VASh | 66.0 (16.8) | 64.7 (15.6) | 67.2 (17.9) | .48 | 0 | |||
| EQ5D emotional distress | 1.0 (0.5) | 1.0 (0.5) | 1.0 (0.4) | .84 | 0 | |||
| MADRSi total | 14.9 (6.2) | 14.9 (5.7) | 15.0 (6.7) | .96 | 0 | |||
| BADSj total | 21.4 (6.1) | 22.4 (5.7) | 20.6 (6.3) | .15 | 0 | |||
| HADSk anxiety | 10.3 (3.0) | 10.5 (2.7) | 10.2 (3.2) | .71 | 0 | |||
| HADS depression | 7.9 (3.0) | 8.0 (2.7) | 7.9 (3.4) | .92 | 0 | |||
| HADS total | 18.3 (4.7) | 18.4 (4.0) | 18.2 (5.3) | .77 | 0 | |||
| Linguistic | ||||||||
| Number of words, mean (SD) | 306.8 (246.7) | 376.8 (257.2) | 242.7 (220.5) | .009 | 0 | |||
| Number of mutual words, mean (SD) | 6.2 (5.7) | 7.6 (5.9) | 4.9 (5.2) | .02 | 0 | |||
| Sentence length, mean (SD) | 13.0 (5.5) | 13.6 (5.0) | 12.4 (5.9) | .28 | 0 | |||
| Adjectives/adverbs, mean (SD) | 193.2 (43.6) | 187.4 (39.9) | 198.5 (46.6) | .23 | 0 | |||
| Possessive pronouns, mean (SD) | 13.1 (10.0) | 12.8 (8.1) | 13.4 (11.5) | .78 | 0 | |||
| Personal pronouns, mean (SD) | 64.6 (27.1) | 70.2 (24.3) | 59.4 (28.8) | .06 | 0 | |||
| Mentions the MIl, n (%) | 69 (77) | 35 (81) | 34 (72) | .44 | 0 | |||
| Other | ||||||||
| Days from MI to allocation, mean (SD) | 70.5 (14.9) | 70.3 (15.0) | 70.7 (14.9) | .91 | 4 | |||
| Way of preferred contact, n (%) | .59 | 0 | ||||||
| 63 (70) | 29 (67) | 34 (72) | ||||||
| Telephone | 11 (12) | 5 (12) | 6 (13) | |||||
| SMSm | 15 (17) | 9 (21) | 6 (13) | |||||
| 1 (1) | 0 (0) | 1 (2) | ||||||
aSBP: systolic blood pressure.
bBMI: body mass index.
cIQR: interquartile range.
dCVD: cardiovascular disease.
eCAQ: Cardiac Anxiety Questionniare [27].
fESSI: ENRICHD Social Support Instrument [28].
gEQ5D: European Quality of Life Questionnaire–Five Dimensions.
hVAS: visual analog scale.
jBADS: Behavioral Activation for Depression Scale–Short Form [31].
kHADS: Hospital Anxiety and Depression Scale [32].
lMI: myocardial infarction.
mSMS: short message service.