Table 1. Baseline Characteristics of Participants by Self-Reported Scar.
| No abnormal scarring | Raised Scar | Keloid | ||
|---|---|---|---|---|
| Characteristica | N=750 | N=338 | N=108 | p-valued |
| Age | 0.3 | |||
| 23-26 yrs | 233 (31.1) | 93 (27.5) | 27 (25.0) | |
| 27-30 yrs | 262 (34.9) | 109 (32.3) | 39 (36.1) | |
| 31-34 yrs | 255 (34.0) | 136 (40.2) | 42 (38.9) | |
| Household Incomeb | 0.2 | |||
| <$20,000 | 351 (47.2) | 129 (38.5) | 51 (47.7) | |
| $20,000-$50,000 | 265 (35.6) | 144 (43.0) | 35 (32.7) | |
| >$50,000 | 128 (17.2) | 62 (18.5) | 21 (19.6) | |
| Educationc | 0.003 | |||
| HS/GED or less | 185 (24.7) | 50 (14.8) | 23 (21.3) | |
| Some college/Associates/Technical | 363 (48.5) | 171 (50.6) | 51 (47.2) | |
| Bachelors/Masters/PhD | 201 (26.8) | 117 (34.6) | 34 (31.5) | |
| Body Mass Index | 0.06 | |||
| <25 kg/m2 | 146 (19.5) | 67 (19.8) | 19 (17.6) | |
| 25-29 kg/m2 | 161 (21.5) | 50 (14.8) | 28 (25.9) | |
| 30-34 kg/m2 | 162 (21.6) | 72 (21.3) | 16 (14.8) | |
| >35 kg/m2 | 281 (37.5) | 149 (44.1) | 45 (41.7) | |
| Smoking History | 0.2 | |||
| Never smoked | 559 (74.5) | 252 (74.6) | 71 (65.7) | |
| Former smoker | 51 (6.8) | 30 (8.9) | 12 (11.1) | |
| Current smoker | 140 (18.7) | 56 (16.6) | 25 (23.2) | |
| Alcohol Use | 0.2 | |||
| Non Drinker | 207 (27.6) | 78 (23.1) | 21 (19.4) | |
| Moderate | 245 (32.7) | 125 (37.0) | 37 (34.3) | |
| Heavy | 298 (39.7) | 135 (39.9) | 50 (46.3) | |
| Menarche | 0.3 | |||
| <10 years | 141 (18.8) | 64 (18.9) | 18 (16.7) | |
| 11 years | 151 (20.1) | 64 (18.9) | 16 (14.8) | |
| 12 years | 183 (24.4) | 101 (29.9) | 35 (32.4) | |
| 13 years | 120 (16.0) | 48 (14.2) | 22 (20.4) | |
| >14 years | 155 (20.7) | 61 (18.1) | 17 (15.7) | |
| Reproductive History | 0.2 | |||
| Never Pregnant | 206 (27.5) | 98 (29.0) | 22 (20.4) | |
| Nulliparous | 93 (12.4) | 39 (11.5) | 14 (13.0) | |
| Parous: 1 birth | 177 (23.6) | 100 (29.6) | 32 (29.6) | |
| Parous: 2 births | 146 (19.5) | 58 (17.2) | 20 (18.5) | |
| Parous: 3+ births | 128 (17.1) | 43 (12.7) | 20 (18.5) |
Abbreviations: GED, General Education Development; SD, standard deviation; yrs, years
aData are presented as n (percentage) of individuals in each scar group. bMissing for Income: No Scar (N=6), Raised Scar (N=3), Keloid (N=1). cMissing for Education: No Scar (N=1). dP-value for categorical comparisons using chi-square.