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. 2023 Mar 27;2023(3):CD009885. doi: 10.1002/14651858.CD009885.pub3

Comparison 8. Non‐serious adverse events: cross‐over trials (endpoint data).

Outcome or subgroup title No. of studies No. of participants Statistical method Effect size
8.1 Proportion of participants with non‐serious events 24 2696 Risk Ratio (IV, Random, 95% CI) 1.39 [1.13, 1.70]
8.2 Subgroup analysis: total number of non‐serious adverse events according to dose 24 3483 Risk Ratio (IV, Random, 95% CI) 1.31 [1.12, 1.53]
8.2.1 Low dose 16 1539 Risk Ratio (IV, Random, 95% CI) 1.11 [0.94, 1.31]
8.2.2 High dose 12 1080 Risk Ratio (IV, Random, 95% CI) 1.57 [1.22, 2.01]
8.2.3 Unknown dose 5 864 Risk Ratio (IV, Random, 95% CI) 1.50 [0.88, 2.56]
8.3 Nervous system (including psychiatry) 52   Risk Ratio (IV, Random, 95% CI) Subtotals only
8.3.1 Aggression 3 743 Risk Ratio (IV, Random, 95% CI) 0.52 [0.17, 1.60]
8.3.2 Agitation 2 273 Risk Ratio (IV, Random, 95% CI) 1.93 [0.37, 10.16]
8.3.3 Anger 3 264 Risk Ratio (IV, Random, 95% CI) 0.45 [0.26, 0.77]
8.3.4 Behavioural complaints 1 82 Risk Ratio (IV, Random, 95% CI) 0.55 [0.35, 0.86]
8.3.5 Buccal or lingual movements 5 569 Risk Ratio (IV, Random, 95% CI) 1.12 [0.81, 1.55]
8.3.6 Compulsive acts 1 90 Risk Ratio (IV, Random, 95% CI) 2.57 [1.45, 4.56]
8.3.7 Daydreaming 3 222 Risk Ratio (IV, Random, 95% CI) 0.66 [0.44, 0.98]
8.3.8 Dizziness 12 2163 Risk Ratio (IV, Random, 95% CI) 1.06 [0.91, 1.23]
8.3.9 Drowsiness: dull, tired, listless or sleepy 24 3011 Risk Ratio (IV, Random, 95% CI) 0.98 [0.80, 1.20]
8.3.10 Euphoria 7 1457 Risk Ratio (IV, Random, 95% CI) 0.97 [0.72, 1.31]
8.3.11 Headache 43 5981 Risk Ratio (IV, Random, 95% CI) 1.25 [1.06, 1.48]
8.3.12 Thirst 1 211 Risk Ratio (IV, Random, 95% CI) 2.78 [0.11, 69.04]
8.3.13 Irritability 27 4110 Risk Ratio (IV, Random, 95% CI) 0.97 [0.74, 1.27]
8.3.14 Nightmares 11 1738 Risk Ratio (IV, Random, 95% CI) 1.00 [0.73, 1.35]
8.3.15 Overly meticulous 1 96 Risk Ratio (IV, Random, 95% CI) 40.77 [2.35, 706.72]
8.3.16 Obsessive thinking 1 90 Risk Ratio (IV, Random, 95% CI) 2.35 [1.53, 3.62]
8.3.17 Picking at skin or fingers, nail biting, lip or cheek chewing 18 2549 Risk Ratio (IV, Random, 95% CI) 1.04 [0.86, 1.25]
8.3.18 Repetitive language 1 48 Risk Ratio (IV, Random, 95% CI) 1.00 [0.32, 3.10]
8.3.19 Sad, tearful or depressed 26 3510 Risk Ratio (IV, Random, 95% CI) 1.15 [0.96, 1.37]
8.3.20 Socially withdrawn ‐ decreased interaction with others 15 2432 Risk Ratio (IV, Random, 95% CI) 1.36 [0.95, 1.95]
8.3.21 Stares a lot 11 2110 Risk Ratio (IV, Random, 95% CI) 1.04 [0.83, 1.31]
8.3.22 Tics or nervous movements 24 3429 Risk Ratio (IV, Random, 95% CI) 1.23 [1.02, 1.50]
8.3.23 Unusual blinking 1 48 Risk Ratio (IV, Random, 95% CI) 3.13 [0.12, 80.68]
8.3.24 Worried or anxious 23 3366 Risk Ratio (IV, Random, 95% CI) 0.85 [0.66, 1.11]
8.3.25 Fatique 1 211 Risk Ratio (IV, Random, 95% CI) 4.59 [0.22, 94.57]
8.3.26 Emotional lability 1 154 Risk Ratio (IV, Random, 95% CI) 9.25 [2.24, 38.22]
8.3.27 Dysphoria 1 154 Risk Ratio (IV, Random, 95% CI) 4.63 [0.23, 94.88]
8.3.28 Moody 1 211 Risk Ratio (IV, Random, 95% CI) 4.59 [0.22, 94.57]
8.3.29 Uninterested 1 1052 Risk Ratio (IV, Random, 95% CI) 1.20 [0.82, 1.75]
8.3.30 Prone to crying 1 1052 Risk Ratio (IV, Random, 95% CI) 1.72 [1.04, 2.86]
8.4 Nervous system (including psychiatry) continuous outcomes 1 40 Mean Difference (IV, Fixed, 95% CI) ‐0.80 [‐3.56, 1.96]
8.4.1 Anxiety 1 40 Mean Difference (IV, Fixed, 95% CI) ‐0.80 [‐3.56, 1.96]
8.5 Digestive system 48   Risk Ratio (IV, Random, 95% CI) Subtotals only
8.5.1 Decreased appetite or loss of appetite 41 6091 Risk Ratio (IV, Random, 95% CI) 3.89 [2.76, 5.48]
8.5.2 Diarrhoea 5 767 Risk Ratio (IV, Random, 95% CI) 0.95 [0.38, 2.34]
8.5.3 Dry mouth 6 496 Risk Ratio (IV, Random, 95% CI) 1.32 [0.59, 2.97]
8.5.4 Dyspepsia 1 62 Risk Ratio (IV, Random, 95% CI) 0.22 [0.02, 2.14]
8.5.5 Nausea 11 1182 Risk Ratio (IV, Random, 95% CI) 1.67 [1.13, 2.46]
8.5.6 Increased appetite 1 136 Risk Ratio (IV, Random, 95% CI) 0.20 [0.08, 0.50]
8.5.7 Stomach ache (abdominal pain) 38 5803 Risk Ratio (IV, Random, 95% CI) 1.70 [1.35, 2.15]
8.5.8 Vomiting 7 1278 Risk Ratio (IV, Random, 95% CI) 2.47 [0.82, 7.47]
8.5.9 Upper abdominal pain 1 107 Risk Ratio (IV, Random, 95% CI) 442413.39 [0.00, 294025957312946900000000000000000000000000000000000000000000000000000000000000000000000000000.00]
8.5.10 Decreased weight 2 365 Risk Ratio (IV, Random, 95% CI) 5.04 [0.59, 43.15]
8.5.11 Gastrointestinal distress 1 77 Risk Ratio (IV, Random, 95% CI) 8103.08 [0.00, 1011052702371868400000000000000000000000000000000000000000000000000000000.00]
8.5.12 Constipation 1 154 Risk Ratio (IV, Random, 95% CI) 4.63 [0.23, 94.88]
8.5.13 Oropharyngeal pain 1 211 Risk Ratio (IV, Random, 95% CI) 2.72 [0.00, 11653710777400273000000000000000000000000000000000000000000000000000000000000000000000000000000.00]
8.5.14 Anorexia 1 203 Risk Ratio (IV, Random, 95% CI) 2.97 [0.61, 14.37]
8.6 Cardiovascular system 2 730 Risk Ratio (M‐H, Random, 95% CI) 4.97 [1.09, 22.76]
8.6.1 Epistaxis 1 154 Risk Ratio (M‐H, Random, 95% CI) 2.78 [0.11, 67.14]
8.6.2 Heart palpitations 2 365 Risk Ratio (M‐H, Random, 95% CI) 5.65 [0.67, 47.90]
8.6.3 Chest pain 1 211 Risk Ratio (M‐H, Random, 95% CI) 6.43 [0.34, 123.02]
8.7 Respiratory system 2 673 Risk Ratio (M‐H, Random, 95% CI) 1.29 [0.36, 4.68]
8.7.1 Nasal congestion 1 154 Risk Ratio (M‐H, Random, 95% CI) 0.92 [0.06, 14.52]
8.7.2 Strep throat/sore throat 1 154 Risk Ratio (M‐H, Random, 95% CI) 2.78 [0.30, 26.09]
8.7.3 Cough 1 154 Risk Ratio (M‐H, Random, 95% CI) 0.46 [0.04, 5.00]
8.7.4 Dyspnea 1 211 Risk Ratio (M‐H, Random, 95% CI) 2.76 [0.11, 66.91]
8.8 Urinary system 1 136 Risk Ratio (IV, Random, 95% CI) 0.50 [0.05, 5.39]
8.8.1 Urinary incontinence 1 136 Risk Ratio (IV, Random, 95% CI) 0.50 [0.05, 5.39]
8.9 Skeletal and muscular system 2 673 Risk Ratio (M‐H, Random, 95% CI) 4.86 [0.83, 28.54]
8.9.1 Ankle pain/strain 1 0 Risk Ratio (M‐H, Random, 95% CI) Not estimable
8.9.2 Muscle strain/pain 1 154 Risk Ratio (M‐H, Random, 95% CI) 12.04 [0.69, 210.03]
8.9.3 Toe fracture 1 154 Risk Ratio (M‐H, Random, 95% CI) 2.78 [0.11, 67.14]
8.9.4 Asthenia 1 211 Risk Ratio (M‐H, Random, 95% CI) 2.76 [0.11, 66.91]
8.10 Skeletal and muscular system continuous outcomes 1 82 Mean Difference (IV, Random, 95% CI) 0.85 [0.79, 0.91]
8.10.1 Somatic complaints 1 82 Mean Difference (IV, Random, 95% CI) 0.85 [0.79, 0.91]
8.11 Immune system (including infections) 9   Risk Ratio (IV, Random, 95% CI) Subtotals only
8.11.1 Allergic rhinitis 4 475 Risk Ratio (IV, Random, 95% CI) 1.38 [0.35, 5.51]
8.11.2 Fever 2 91 Risk Ratio (IV, Random, 95% CI) 1.39 [0.09, 20.56]
8.11.3 Lymphadenitis 2 296 Risk Ratio (IV, Random, 95% CI) 3.93 [0.44, 35.11]
8.11.4 Pharyngolaryngeal pain 1 160 Risk Ratio (IV, Random, 95% CI) 2.00 [0.19, 21.62]
8.11.5 Pharyngitis 4 754 Risk Ratio (IV, Random, 95% CI) 0.71 [0.19, 2.62]
8.11.6 Upper respiratory tract infection 7 1245 Risk Ratio (IV, Random, 95% CI) 1.21 [0.51, 2.86]
8.11.7 Nasopharyngitis 1 203 Risk Ratio (IV, Random, 95% CI) 0.79 [0.22, 2.87]
8.11.8 Influenza 1 154 Risk Ratio (IV, Random, 95% CI) 4.63 [0.23, 94.87]
8.11.9 Mouth ulcers/bad breath 1 154 Risk Ratio (IV, Random, 95% CI) 4.63 [0.23, 94.87]
8.11.10 Urinary tract infection 1 154 Risk Ratio (IV, Random, 95% CI) 2.78 [0.11, 67.14]
8.11.11 Otitis media (ear pain) 1 0 Risk Ratio (IV, Random, 95% CI) Not estimable
8.12 Integumentary system 4   Risk Ratio (IV, Random, 95% CI) Subtotals only
8.12.1 Rash 3 362 Risk Ratio (IV, Random, 95% CI) 1.49 [0.35, 6.37]
8.12.2 Skin laceration 1 167 Risk Ratio (IV, Random, 95% CI) 2.96 [0.12, 71.75]
8.12.3 Cellulitis 1 154 Risk Ratio (IV, Random, 95% CI) 2.78 [0.11, 67.14]
8.13 Sleep variability continuous outcomes 1 512 Mean Difference (IV, Fixed, 95% CI) ‐2.21 [‐5.23, 0.81]
8.13.1 Actigraphic total sleep time 1 52 Mean Difference (IV, Fixed, 95% CI) ‐29.80 [‐60.86, 1.26]
8.13.2 Actigraphic sleep onset latency 1 52 Mean Difference (IV, Fixed, 95% CI) 21.10 [1.33, 40.87]
8.13.3 Actigraphic sleep efficiency 1 52 Mean Difference (IV, Fixed, 95% CI) ‐3.30 [‐8.16, 1.56]
8.13.4 Polysonmnographic total sleep time 1 252 Mean Difference (IV, Fixed, 95% CI) ‐24.60 [‐52.20, 3.00]
8.13.5 Polysomnographic sleep onset latency 1 52 Mean Difference (IV, Fixed, 95% CI) 8.40 [‐7.11, 23.91]
8.13.6 Polysomnographic sleep efficiency 1 52 Mean Difference (IV, Fixed, 95% CI) ‐2.20 [‐6.34, 1.94]
8.14 Sleep variability 39 5810 Risk Ratio (IV, Random, 95% CI) 1.81 [1.34, 2.44]
8.14.1 Insomnia or sleep problems 37 5499 Risk Ratio (IV, Random, 95% CI) 1.88 [1.39, 2.56]
8.14.2 Sleep efficiency (SEF) 2 108 Risk Ratio (IV, Random, 95% CI) 0.48 [0.02, 14.28]
8.14.3 Initial insomnia 1 203 Risk Ratio (IV, Random, 95% CI) 0.59 [0.15, 2.42]
8.15 Vital signs 14   Std. Mean Difference (IV, Random, 95% CI) Subtotals only
8.15.1 Diastolic blood pressure (mmHg) 11 755 Std. Mean Difference (IV, Random, 95% CI) 0.15 [‐0.04, 0.34]
8.15.2 Systolic blood pressure (mmHg) 11 755 Std. Mean Difference (IV, Random, 95% CI) 0.05 [‐0.15, 0.26]
8.15.3 Pulse or heart rate (bpm) 14 939 Std. Mean Difference (IV, Random, 95% CI) 0.43 [0.23, 0.64]
8.16 Physical parameters 6 576 Std. Mean Difference (IV, Random, 95% CI) ‐0.04 [‐0.20, 0.13]
8.16.1 Height (cm) 1 46 Std. Mean Difference (IV, Random, 95% CI) 0.20 [‐0.38, 0.78]
8.16.2 Weight 6 530 Std. Mean Difference (IV, Random, 95% CI) ‐0.06 [‐0.23, 0.11]
8.17 Other (including drug toxicity) 2 1443 Risk Ratio (M‐H, Random, 95% CI) 3.25 [0.99, 10.62]
8.17.1 Growth hormone deficiency 1 0 Risk Ratio (M‐H, Random, 95% CI) Not estimable
8.17.2 Eye pain 1 154 Risk Ratio (M‐H, Random, 95% CI) 2.78 [0.11, 67.14]
8.17.3 Carious teeth 1 0 Risk Ratio (M‐H, Random, 95% CI) Not estimable
8.17.4 Foreign body swallowed 1 154 Risk Ratio (M‐H, Random, 95% CI) 2.78 [0.11, 67.14]
8.17.5 Bug bites/bee stings 1 154 Risk Ratio (M‐H, Random, 95% CI) 4.63 [0.23, 94.87]
8.17.6 Sunburn 1 154 Risk Ratio (M‐H, Random, 95% CI) 2.78 [0.11, 67.14]
8.17.7 Finger laceration 1 154 Risk Ratio (M‐H, Random, 95% CI) 2.78 [0.11, 67.14]
8.17.8 Flat affect (lack of emotional expression) 1 154 Risk Ratio (M‐H, Random, 95% CI) 4.63 [0.23, 94.87]
8.17.9 Peripheral oedema 1 211 Risk Ratio (M‐H, Random, 95% CI) 2.76 [0.11, 66.91]