Table IA.
— Demographic differences between CBRC respondents and Spain respondents
| CBRC | SPAIN | ALL | Chi-square Test p-value | |
| Percent Catholic while growing up | 34 | 71 | 39 | 0.00 |
| N= | 262 | 45 | 297 | |
| Percent Catholic now | 24 | 40 | 27 | 0.02 |
| N= | 252 | 45 | 297 | |
| Percent Female | 87 | 98 | 89 | 0.05 |
| N= | 249 | 45 | 294 | |
| Percent Heterosexual | 96 | 96 | 96 | |
| N= | 250 | 45 | 295 | |
| Percent Caucasian | 94 | 73 | 91 | 0.00 |
| N= | 252 | 45 | 297 | |
| Percent education above Secondary School | 74 | 61 | 72 | 0.05 |
| N= | 226 | 43 | 269 | |
| Percent Middle or Upper Social Class | 83 | 67 | 81 | 0.02 |
| N= | 243 | 43 | 286 | |
| Percent Age 45 or older | 60 | 27 | 55 | 0.00 |
| N= | 247 | 45 | 292 | |
| Percent Age 40 or Older at conception of First Donor-Conceived Child | 80 | 44 | 74 | 0.00 |
| N= | 234 | 39 | 273 | |
| Percent Partnered | 92 | 88 | 91 | |
| N= | 213 | 41 | 254 | |
| Percent who disclosed donor conception to child | 25 | 3 | 22 | 0.00 |
| N= | 239 | 39 | 278 | |
| Percent who has told No one about donor conception | 5 | 15 | 7 | 0.04 |
| N= | 239 | 39 | 278 |