Factors associated with self-rated health in primary care

Figures & data

Table 1. The independent variables (self-rated health, sleep and satisfaction with interpersonal relationships) used in the analyses, including response options, missing values, valid response, Cronbach’s alpha, mean values and min/max values for composite scores.

Variables	Response options	Valid response	Cronbach’s alpha	Mean (SD)	Range
Self-rated health
How, in general, would you rate your health?	5 (1–5)	1291		2.89 (1.02)	1–5
Sleep
Bergen Insomnia scale (sum score of six items^a)	43 (0–42)	1282	0.84	12.51 (11.01)	0–42
Somatic health complaintsin the past 6 months, how often have you experienced:			0.75	2.02 (0.96)	1–5
Headache	5 (1–5)	1278
Stomach ache	5 (1–5)	1252
Backache	5 (1–5)	1260
Neck and shoulder pain	5 (1–5)	1276
Hip pain	5 (1–5)	1276
Satisfaction with interpersonal relationships			0.94	4.32 (0.87)	1–5
Those who I am usually with I consider to be my friends	5 (1–5)	1292
Those who I am with care about me	5 (1–5)	1287
Those who I am with are quite nice to me	5 (1–5)	1289

^a Sum-score is valid (prevalence of single-item-missing for each item between 2.2% and 3.6%).

Table 2. Cross-tabulation of self-rated health (SRH) in different age groups and gender, including the total number of responses in each SRH category.

	SRH
	Excellent/very good n (%)	Good n (%)	Fair/poor n (%)	Total n (%)
Total	453 (35)*	503 (39)	335 (26) #	1291 (100)
Age groups
16–30 years	137 (47)	98 (34)	55 (19)	290 (100)
31–45 years	124 (39)	120 (38)	72 (23)	316 (100)
46–62 years	99 (30)	130 (39)	104 (31)	333 (100)
63–100 years	89 (26)	154 (44)	104 (30)	347 (100)
Gender
Male	154 (33)	191 (41)	119 (26)	464 (100)
Female	295 (36)	311 (38)	216 (26)	822 (100)

n = number of respondents.

* 108 (8) “excellent” # 80 (6) “poor.

Table 3. Unadjusted and adjusted ordinal logistic regression analyses of the relationship between self-rated health (SRH*) and the independent variables, adjusting for age and gender.

Variables	Unadjusted			Adjusted
	OR	p-value	95% CI	OR	p-value	95% CI
Female	0.95	0.62	0.77; 1.17
Age^a	1.02	<0.01	1.01; 1.02
Sleep problems^a	2.25	<0.01	2.01; 2.52	2.42	<0.01	2.15; 2.72
Somatic health complaints^c	2.71	<0.01	2.40; 3.07	2.90	<0.01	2.56; 3.30
Unmet needs for interpersonal relationships^c	1.26	<0.01	1.13; 1.39	1.21	<0.01	1.08; 1.35

* SRH is divided in three levels, higher OR indicates reduced SRH.

Entered in the analyses as: ^aYears, ^bSum-score of BIS, ^cMean-score.

Table 4. Full model ordinal logistic regression analysis for the relationship between self-rated health (SRH*) and the independent variables.

Variables	Adjusted			Explained variance (Nagelkerke)
	OR(a)	p-value	95% CI
Gender	0.73	0.01	0.58; 0.93
Age	1.02	<0.01	1.02; 1.03
Sleep problems	1.81	<0.01	1.60; 2.06
Somatic health complaints	2.33	<0.01	2.03; 2.67
Unmet needs for interpersonal relationships	1.16	0.01	1.04; 1.30
Explained variance				0.34

* SRH is divided in three levels, higher OR indicates reduced SRH.