Table 2. Themes and codes for qualitative analysis (n=775).

More than one code could be used for each comment. Four additional codes were used but are not listed here as they were systematically assessed in the quantitative part of the survey and infrequently mentioned in the comments: stillbirth, infant death, termination, loss beyond the first year.

Code	Theme	Comments with code	n	2-coder Kappa
Theme 1: “I’m not alone”
A	I’m not alone/others with similar experiences	78%	601	0.867
B	Support, friendship, community	16%	121	0.820
C	Enjoy sharing and reading other people’s stories	12%	95	0.883
Theme 2: Validation and Safety
D	Validating environment, normalizes grief	13%	100	0.922
E	Non-judgmental, people share true feelings	11%	82	0.806
F	Private and anonymous	5%	36	0.924
Theme 3: Internet Ease and Convenience
G	Access to people not available in “real” life	10%	75	0.737
H	Physically accessible and convenient	8%	63	0.956
I	Easier to communicate on internet	6%	47	0.911
J	Therapeutic to write	5%	38	0.730
Theme 4: Moving Forward
K	Learning how I and others can cope and grieve and knowing other people got through	9%	67	0.798
L	Gaining hope from subsequent pregnancy success stories	3%	26	0.871
M	Like being able to help others	3%	23	0.906
N	Learning new information	6%	50	0.853
O	Knowing others that have it worse than me	1%	6	0.799