Table 1.
Demographics of infants with and without pets in Experiment 1.
| Group | N | Number of boys | Average age in days (SD) | Infants with older siblings (of 1240 who reported sibling information) | Number years maternal education (SD) |
|---|---|---|---|---|---|
| Pet | 804 | 417 (52%) | 176.08 (59.64) | 381 (48%) | 15.99 (2.05) |
| Cat only | 239 | 120 (50%) | 176.19 (61.23) | (105) 47% | 16.46 (2.04) |
| Dog only | 387 | 214 (55%) | 174.23 (58.66) | (263) 48% | 15.74 (2.07) |
| Dog and cat | 178 | 83 (47%) | 180.00 (59.75) | (75) 42% | 15.87 (1.94) |
| No Pet | 466 | 231 (50%) | 177.76 (63.68) | 250 55% | 15.83 (2.16) |
| Total | 1,270 | 648 (51%) | 176.70 (61.13) | 631 (51%) | 15.93 (2.09) |