Associations between baseline characteristics and self-authored content
The odds ratios of whether a participant authored any prompt, as well as whether they authored prompts belonging to each thematic category, are summarized in Table 
Medians of the posterior distributions of odds ratio (with 2.5% and 97.% percentiles) indicating associations with the odds of authoring any prompt, and prompts that fall into each thematic group, alongside the posterior probability of associationGroup(intervention vs. control)2.36 (1.92; 2.93)
1.06 (0.83; 1.37)
0.87 (0.64; 1.19)
0.86 (0.71; 1.03)
0.80 (0.66; 0.96)
0.52 (0.36; 0.75)
1.00 (0.99; 1.01)
1.00 (0.98; 1.01)
1.00 (0.98; 1.02)
1.00 (0.99; 1.01)
1.00 (0.99; 1.02)
0.99 (0.96; 1.02)
1.00 (0.98; 1.02)
1.00 (0.98; 1.02)
1.02 (1.00; 1.05)
1.01 (1.00; 1.03)
0.98 (0.97; 1.00)
1.02 (0.98; 1.05)
Sex(man vs. woman)0.57 (0.45; 0.71)
0.69 (0.52; 0.91)
0.70 (0.49; 1.00)
0.65 (0.52; 0.80)
0.85 (0.69; 1.06)
0.63 (0.40; 0.98)
1.03 (1.02; 1.04)
0.98 (0.97; 0.99)
0.97 (0.95; 0.98)
0.98 (0.97; 0.99)
1.00 (0.99; 1.01)
1.00 (0.98; 1.02)
Alone with kidsvs. alone no kids1.32 (0.98; 1.77)
0.99 (0.62; 1.61)
1.06 (0.59; 1.87)
1.46 (1.04; 2.06)
1.02 (0.71; 1.47)
1.11 (0.51;2.39)
Partner not living togethervs. alone no kids1.21 (0.76; 1.90)
1.48 (0.88; 2.50)
0.58 (0.28; 1.21)
1.47 (1.00; 2.19)
0.87 (0.56; 1.36)
0.96 (0.39; 2.31)
0.99 (0.71; 1.36)
0.91 (0.60; 1.39)
0.87 (0.52; 1.46)
0.93 (0.67; 1.30)
1.07 (0.79; 1.45)
1.00 (0.52;1.93)
1.34 (0.90; 1.97)
0.95 (0.65; 1.38)
0.71 (0.43; 1.14)
1.35 (1.01; 1.80)
1.02 (0.77; 1.35)
0.98 (0.52; 1.79)
1.09 (1.01; 1.18)
1.17 (1.03; 1.33)
1.09 (0.93; 1.29)
1.10 (0.01; 1.21)
1.02 (0.94; 1.10)
1.07 (0.88; 1.30)
1.03 (0.99; 1.07)
0.97 (0.92; 1.02)
1.01 (0.96; 1.07)
1.03 (0.99; 1.06)
0.97 (0.94; 1.01)
0.98 (0.90; 1.06)
0.98 (0.94; 1.02)
1.00 (0.95; 1.06)
1.04 (0.97; 1.11)
1.01 (0.98; 1.06)
1.01 (0.97; 1.05)
1.03 (0.95; 1.13)
Notes: For the variable “group”, odds ratios greater than 1 indicate an increased likelihood of authoring a prompt among the intervention group compared to the control group. For the sex variable, odds ratios greater than 1 indicate that being a man increases the likelihood of authoring a prompt. For the household status variable, odds ratios greater than 1 for each status indicate an increased likelihood of authoring a prompt relative to living alone with no kids. All other relationships show condition associations with the odds of authoring a prompt, where odds ratios greater than 1 indicate an increased odds given a one-unit increase above the mean in the variable tested assuming all else is equal. Analysis on the presence of any prompt was based on the full parent study cohort (N = 2129) while analysis on the presence of the five thematic categories was based on respondents to the prompts module (N = 476).