Table 2 Parent, infant, and family variables at baseline and follow-up
| Â | Baseline | Follow-up |
|---|---|---|
Mothers | n = 232 | n = 188 |
 Paid employment, n (%) | 40 (17.2) | 122 (64.9) |
 Sleep problem rating, n (%) | ||
  Not a problem | 1 (0.4) | 72 (38.3) |
  Mild | 43 (18.5) | 64 (34.0) |
  Moderate | 148 (63.8) | 48 (25.5) |
  Severe | 40 (17.2) | 4 (2.1) |
Fathers | n = 223 | n = 171 |
 Paid employment, n (%) | 205 (91.9) | 159 (93.0) |
 Sleep problem rating, n (%) | ||
  Not a problem | 8 (3.6) | 63 (36.8) |
  Mild | 42 (18.8) | 58 (33.9) |
  Moderate | 139 (62.3) | 48 (28.1) |
  Severe | 34 (15.2) | 2 (1.2) |
Infantsa | n = 455 | n = 359 |
 Age in months, [M (SD)], range | 6.7 (0.9), (5, 10) | 12.9 (1.1), (11, 16) |
 Breastfed, n (%) | 410 (90.1) | 198 (55.2) |
 Co-sleeping, n (%) | 275 (60.4) | 94 (26.2) |
Familya | n = 440 | n = 350 |
 Income, n (%) | ||
 $10,000 – 29,999 | 20 (4.5) | 16 (4.6) |
 $30,000 – 59,999 | 64 (14.5) | 47 (13.4) |
 $60,000 – 89,999 | 81 (18.4) | 72 (20.6) |
 $90,000 – 109,999 | 91 (20.7) | 64 (18.3) |
 More than $110,000 | 184 (41.8) | 151 (43.1) |