TABLE 1.
Included Studies
| Author | Year | N | Age | Lan- guage |
Current Versus Lifetime Symp- toms |
Symptom Scoring System |
Type | Factor Rotation Method |
Factor Number |
Factors |
|---|---|---|---|---|---|---|---|---|---|---|
| Baer | 1994 | 107 | Adult | English | Current | Symptom severity | Category | Varimax | 3 | Factor 1: Hoarding obsessions and compulsions, repeating, ordering, counting (20.7%) |
| Factor 2: Contamination, cleaning, somatic, checking (16.0%) | ||||||||||
| Factor 3: Aggression, sexual, religious (11.3%) | ||||||||||
| Hantouche and Lancrenon | 1996 | 615 | Adult | Non-English (French) | Current | Present/absent | Both | Varimax | 3 | Factor 1: Hoarding obsessions and compulsions, symmetry, repeating, ordering, and checking |
| Factor 2: Aggressive, sexual, religious, miscellaneous obsessions and compulsions | ||||||||||
| Factor 3: Cleaning, contamination, and somatic obsessions | ||||||||||
| Leckman et al. | 1997 | 292 | Adult | English | Lifetime | Symptom number | Category | Varimax | 4 | Factor 1: Aggression, sexual, religious, somatic, checking (30.1%) |
| Factor 2: Symmetry, ordering, repeating, counting (13.8%) | ||||||||||
| Factor 3: Contamination, cleaning (10.2%) | ||||||||||
| Factor 4: Hoarding obsessions and compulsions (8.5%) | ||||||||||
| Mataix-Cols et al. | 1999 | 354 | Adult | English | Current | Symptom severity | Category | Varimax | 5 | Factor 1: Symmetry, ordering, repeating, counting (19.0%) |
| Factor 2: Hoarding obsessions and compulsions (13.8%) | ||||||||||
| Factor 3: Contamination, cleaning (12.7%) | ||||||||||
| Factor 4: Aggressive, checking (10.4%) | ||||||||||
| Factor 5: Sexual, religious (9.7%) | ||||||||||
| Tek and Ulug | 2001 | 45 | Adult | Non-English (Turkish) | Current | Present/absent | Category | Varimax | 5 | Factor 1: Contamination, cleaning, repeating (17.8%) |
| Factor 2: Symmetry, somatic, ordering (15.2%) | ||||||||||
| Factor 3: Aggressive, counting (13.7%) | ||||||||||
| Factor 4: Sexual, religious (9.7%) | ||||||||||
| Factor 5: Hoarding compulsions and checking (9.2%) | ||||||||||
| Girishchandra and Khanna | 2001 | 202 | Adult | Non-English (India) | Lifetime | Present/absent | Item | Varimax | 5 | Factor 1: Contamination, cleaning (14.3% ) |
| Factor 2: Symmetry, ordering, hoarding obsessions and compulsio ns (6.4%) | ||||||||||
| Factor 3: Harm, checking (5.4%) | ||||||||||
| Factor 4: Superstitious fears, mental rituals, and need to touch, tap, and rub (4.6%) | ||||||||||
| Factor 5: Sexual and religious (4.2%) | ||||||||||
| Mataix-Cols et al. | 2002 | 153 | Adult | English | Current | Present/absent | Category | Varimax | 5 | Factor 1: Aggressive, religious, checking, repeating, and counting (23.3%) |
| Factor 2: Contamination, cleaning (13.3%) | ||||||||||
| Factor 3: Symmetry, ordering, counting (10.9%) | ||||||||||
| Factor 4: Hoarding obsessions and compulsions (8.3%) | ||||||||||
| Factor 5: Sexual, somatic (7.9%) | ||||||||||
| Cavallini et al. | 2002 | 180 | Adult | Non-English (Italian) | Lifetime | Symptom number | Category | Varimax | 5 | Factor 1: Contamination, cleaning (17.0%) |
| Factor 2: Hoarding obsessions and compulsions (13.0%) | ||||||||||
| Factor 3: Aggressive, sexual, somatic, religious, checking, repeating (11.5%) | ||||||||||
| Factor 4: Symmetry, ordering, religious (9.5%) | ||||||||||
| Factor 5: Repeating, counting, symmetry (8.8%) | ||||||||||
| Feinstein et al. | 2003 | 160 | Adult | English | Current | Present/absent | Both | Varimax | 4 | Factor 1: Symmetry, ordering, repeating, counting (14.2%) |
| Factor 2: Contamination, cleaning, aggressive, checking (14.2%) | ||||||||||
| Factor 3: Hoarding obsessions and compulsions (13.9%) | ||||||||||
| Factor 4: Sexual, religious (11.8%) | ||||||||||
| Denys et al. | 2004 | 335 | Adult | Non-English (Dutch) | Current | Symptom severity | Item | Varimax | 5 | Factor 1: Contamination, cleaning (16.4%) |
| Factor 2: Aggressive, sexual, religious (9.8%) | ||||||||||
| Factor 3: Somatic and checking (5.9%) | ||||||||||
| Factor 4: Symmetry, repeating, ordering, counting, hoarding obsessions and compulsions (5.6%) | ||||||||||
| Factor 5: High-risk and checking (4.0%) | ||||||||||
| Hasler et al. | 2005 | 169 | Adult | English | Lifetime | Present/absent | Category | Varimax | 4 | Factor 1: Aggression, sexual, religious, somatic, checking (19.5%) |
| Factor 2: Symmetry, ordering, repeating, counting (18.6%) | ||||||||||
| Factor 3: Contamination, cleaning (13.7%). | ||||||||||
| Factor 4: Hoarding obsessions and compulsions (12.9%) | ||||||||||
| Kim et al. | 2005 | 124 | Adult | Non-English (Korean) | Current | Symptom Severity | Category | Varimax | 4 | Factor 1: Hoarding obsessions and compulsions, repeating, ordering, counting (34.0%) |
| Factor 2: Contamination, cleaning (11.1%) | ||||||||||
| Factor 3: Aggression, sexual (10.0%) | ||||||||||
| Factor 4: Religious, somatic (7.7%) | ||||||||||
| Delorme et al. | 2006 | 73 | Child | Non-English (French) | Current | Symptom number | Category | Varimax | 4 | Factor 1: Symmetry, checking, repeating, ordering (35.2%) |
| Factor 2: Aggressive, sexual, somatic, counting (12.7%) | ||||||||||
| Factor 3: Contamination, religious, cleaning (11%) | ||||||||||
| Factor 4: Hoarding obsessions and compulsions (8.1%) | ||||||||||
| McKay et al. | 2006 | 137 | Child | English | Current | Symptom number | Category | Oblimin | 4 | Factor 1: Cleaning, checking, repeating, counting, ordering, superstitious behaviors, rituals involving others (17.3%) |
| Factor 2: Aggressive, sexual, magical thinking (15.9%) | ||||||||||
| Factor 3: Contamination, aggressive, sexual, magical thoughts, somatic, religious, repeating, counting, symmetry, rituals involving others (12.7%) | ||||||||||
| Factor 4: Hoarding obsessions and compulsions, somatic, counting, ordering (11.9%) | ||||||||||
| Pinto et al. | 2007 | 293 | Adult | English | Current | Symptom number | Category | Varimax | 5 | Factor 1: Symmetry, ordering, repeating, counting (22.5%) |
| Factor 2: Hoarding obsessions and compulsions (13.3%) | ||||||||||
| Factor 3: Pathological doubt, somatic, checking (12.2%) | ||||||||||
| Factor 4: Contamination and cleaning (10.3%) | ||||||||||
| Factor 5: Aggressive, sexual, religious (7.4%) | ||||||||||
| Cullen et al. | 2007 | 221 | Adult | English | Lifetime | Present/absent | Category | Varimax | 4 | Factor 1: Aggressive, sexual, religious, somatic |
| Factor 2: Cleaning, contamination | ||||||||||
| Factor 3: Symmetry obsessions, repeating, ordering, counting, sensory/motor compulsions | ||||||||||
| Factor 4: Hoarding obsessions and compulsions | ||||||||||
| Matsunaga et al. | 2008 | 343 | Adult | Non-English (Japanese) | Lifetime | Symptom number | Category | Varimax | 4 | Factor 1: Cleaning, contamination (21.2%) |
| Factor 2: Hoarding obsessions and compulsions (14.3%) | ||||||||||
| Factor 3: Symmetry, repeating, ordering (11.9%) | ||||||||||
| Factor 4: Aggression, checking (10.3%) | ||||||||||
| Hasler et al. | 2007 | 418 | Adult | English | Lifetime | Symptom number | Category | Promax | 4 | Factor 1: Aggressive, sexual, religious, somatic, and checking (17.7%) |
| Factor 2: Symmetry, repeating, counting, ordering (15.4%) | ||||||||||
| Factor 3: Cleaning, contamination (15.4%) | ||||||||||
| Factor 4: Hoarding obsessions and compulsions (14.2%) | ||||||||||
| Stein et al. | 2007 | 434 | Adult | English and non-English (12 countries) | Current | Symptom severity | Item | Varimax | 5 | Factor 1: Contamination, cleaning |
| Factor 2: Harm, checking | ||||||||||
| Factor 3: Aggression, sexual and religious | ||||||||||
| Factor 4: Symmetry, repeating, ordering, counting, hoarding obsessions and compulsions | ||||||||||
| Factor 5: Somatic | ||||||||||
| Stewart et al. | 2007 | 231 | Child | English | Lifetime | Symptom number | Category | Promax | 4 | Factor 1: Symmetry, ordering, repeating, checking (27.0%) |
| Factor 2: Contamination, cleaning, aggressive, somatic (14.4%) | ||||||||||
| Factor 3: Hoarding obsessions and compulsions (11.1%) | ||||||||||
| Factor 4: Religious, sexual (9.1%) | ||||||||||
| Mataix-Cols et al. | (in press) | 238 | Child | English | Lifetime | Symptom number | Category | Varimax | 4 | Factor 1: Hoarding obsessions and compulsions, checking (14.1%) |
| Factor 2: Aggressive, sexual, religious (13.7%) | ||||||||||
| Factor 3: Contamination, cleaning, somatic(13.6%) | ||||||||||
| Factor 4: Symmetry, ordering, repeating, checking (13.1%) | ||||||||||